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Digestive System

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Answer
alimentary canal; digests and absorbs food; mouth, pharynx, esophagus, stomach, small intestine, large intestine   digestive system  
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teeth, tongue, salivary glands, liver, gallbladder & pancreas   accessory digestive organs  
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taking food into the digestive tract   ingestion  
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moving of food through gut   propulsion  
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propulsion includes   swallowing & peristalsis  
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alternate waves of contraction & relaxation   peristalsis  
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chewing, mixing food with saliva by tongue, peristalsis in stomach   mechanical digestion  
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more/less stationary alternate contractions & relaxations   segmentation  
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in peristalsis, adjacent segments of alimentary tract organs   alternately contract & relax, which moves food along tract distally  
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in segmentation, nonadjacent segments of alimentary tract organs alternately contract and relax   moving food forward then backward  
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food mixing & slow food propulsion occurs   during segmentation  
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complex food molecules are broken down into simpler ones by enzymes   chemical digestion  
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passage of digested end products along w/water from lumen of gut into blood/lymph   absorption  
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elimination of indigestible substances from body as feces   defecation  
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serous membrane of abdominal cavity   peritoneum  
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located on external surface of most digestive organs   visceral peritoneum  
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lines the body wall   parietal peritoneum  
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located btwn two peritoneums; fluid lubricates mobile organs   peritoneal cavity  
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double layer of peritoneum   mesentery  
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travel in the mesentery   blood vessels, lymphatics, & nerves  
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functions of the mesentery include   holding organs in place & storing fat  
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lies posterior to peritoneum   retroperitoneal organs  
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are surrounded by peritoneum   intraperitoneal organs  
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mucous membrane layer of alimentary canal   mucosa  
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connective tissue layer of alimentary canal   submucosa  
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inner circular, outer longitudinal muscle layers of alimentary canal   muscularis externa  
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visceral peritoneum layer of alimentary canal   serosa  
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arterial supply that supports hepatic, splenic, & gastric, and inferior & superior mesenteric   abdominal aorta  
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drains nutrient-rich blood from digestive organs & delivers it to liver first   hepatic portal vein  
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alimentary canal has its own __ __ neurons   intrinsic enteric  
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in alimentary canal, this regulates glands & smooth muscle in mucosa   submucosal nerve plexus  
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in alimentary canal, this is located btwn muscle layers & controls GI tract motility   myenteric nerve plexus  
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sympathetic & parasympathetic nerves are the __ __ of alimentary canal nervous system   extrinsic control  
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in alimentary canal, this inhibits secretion & motility   sympathetic nerves  
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in alimentary canal, this stimulates secretion & motility   parasympathetic nerves  
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oral/buccal cavity is lined with   stratified squamous epithelium  
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area btwn lips & cheeks, then teeth & gums   vestibule  
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area that lies within teeth & gums   oral cavity proper  
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area of median attachment of each lip to gums   labial frenulum  
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palatine bones & palatine processes of maxillae   hard palate  
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fold formed mostly of skeletal muscle, within oral cavity   soft palate  
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closes off nasopharynx during swallowing   function of soft palate  
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uvula __ __ from soft palate free edge   projects downward  
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taste, mixing food during chewing, formation of bolus, helps in swallowing & speech   functions of tongue  
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has intrinsic & extrinsic muscles   tongue  
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attachment of lips to the gums   lingual frenulum  
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surface of tongue shows   papillae  
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whitish, provide friction; located on surface of tongue   filiform papillae  
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reddish, scattered over tongue surface   fungiform  
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V-shaped row in back of tongue surface   circumvallate/vallate  
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papillae that are associated w/taste buds   fungiform & circumvallate  
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arterial supply from abdominal aorta & hepatic portal vein make up   splanchnic circulation  
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gland located anterior to ear   parotid  
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open into vestibule next to 2nd upper molar   parotid duct  
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gland medial to body of mandible   submandibular gland  
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each submandibular gland duct opens   on each side of lingual frenulum  
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gland located under tongue   sublingual gland  
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sublingual gland ducts open   into floor of mouth  
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contains electrolytes, salivary amylase, lipase & mucin and also lysozyme, defensins   saliva  
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part of saliva that protects against bacteria   lysozyme & defensins  
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continuously keep mouth moist   intrinsic glands  
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parotid, submandibular, & sublingual glands are   extrinsic  
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produce secretions when ingested food increases salivation   stimulates receptors in mouth & parasympathetic stimulation  
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sympathetic stimulation inhibits   salivation causing dry mouth  
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20 primary teeth are called   deciduous  
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have deciduous teeth from   6-24 month of age  
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deciduous teeth include   2 incisors, 1 canine, 2 molars  
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permanent teeth develop, when roots are resorbed & teeth fall out at   6–12 years of age  
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there are 32 __ teeth   permanent  
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permanent teeth include   2 incisors, 1 canine, 2 premolars, 3 molars  
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oropharynx & laryngopharynx make up   pharynx  
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functions of oropharynx & laryngopharynx   allow passage of food & air  
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oropharynx & laryngopharynx are made up of   stratified squamous epithelium lining  
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oropharynx & laryngopharynx have __ muscle layer wall   skeletal  
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muscular wall of oropharynx & laryngopharynx serves to   contract & propel food into esophagus  
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is 10-inch muscular tube extends from pharynx to stomach   esophagus  
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esophagus pierces diaphragm at   esophageal hiatus  
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lined by stratified squamous epithelium   esophageal mucosa  
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glands in submucosa of esophagus, secrete mucus that   helps in bolus movement  
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made up of skeletal muscle superiorly & smooth muscle inferiorly   muscularis layer of esophagus  
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outermost connective tissue layer of esophagus   adventitia  
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ingestion of food; mechanical digestion; chemical digestion; propulsion are all   digestive processes of mouth  
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chewing is __ digestion   mechanical  
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salivary amylase breaks up polysaccharides during   chemical digestion in mouth  
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propulsion in mouth/swallowing is called   deglutition  
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voluntary contraction of tongue; 1st phase of deglutition   buccal phase  
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involuntary contraction of tongue; 2nd phase of deglutition   pharyngeal-esophageal phase  
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cardiac region of stomach surrounds   cardiac orifice  
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dome-shaped region of stomach   fundus  
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mid-portion of stomach   body  
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antrum, pyloric canal, & pylorus   pyloric region  
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convex; greater omentum hangs from it   greater curvature  
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concave; extends lesser omentum btwn it & the liver   lesser curvature  
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increase surface area of stomach   ruggae  
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omentum is __ that __ stomach   mesentery; surrounds  
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muscularis externa is made up of   inner circular, outer longitudinal, & oblique muscle layers  
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activates pepsin, & kills many bacteria   HCl acid  
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required for Vit. B12 absorption (lack of intrinsic factor → pernicious anemia   intrinsic factor  
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( inactive form of pepsin) for protein digestion   pepsinogen  
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gastrin is a(n)   hormone  
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prevents self digestion of stomach   mucosal barrier  
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mucosal barrier consists of layer of __ mucus   bicarbonate-rich  
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mucosal barrier consists of __ __ between epithelial cells   tight junctions  
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mucosal barrier consists of __ __ cells being quickly replaced by new cells   damaged epithelial  
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inflammation caused by anything that breaches mucosal barrier   gastritis  
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erosion of the stomach wall   gastric ulcer  
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important cause of gastritis & ulcers   Helicobacter pylori bacteria  
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__ of proteins by HCl is digestive process in stomach   denaturation  
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protein __ begins by pepsin in stomach   digestion  
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stomach delivers __ to small intestine   chyme  
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neural control of stomach is through   parasympathetic  
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hormonal control of stomach is through   gastrin  
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stimulation of gastric secretion is under   neural & hormonal controls  
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even before food enters stomach- by the site, smell & taste of food   cephalic (reflex) phase  
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in cephalic (reflex) phase, signals from smell & taste receptors reach brain, resulting in   vagus nerve stimulating the stomach  
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once food reaches the stomach; phase lasts for 3–4 hours provides most of gastric juice   gastric phase  
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neural stimulation & gastrin involved in __ of gastric secretion   regulation  
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intestinal gastrin as partially digested food enters duodenum (brief); increase gastric secretion   stimulatory effect  
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decreases gastric secretion   inhibitory effects  
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inhibitory effects work through neural pathway of   enterogastric reflux  
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inhibitory effects work through neural pathway of   intestinal hormones of CCK, secretin  
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also causes increase in HCl secretion   histamine  
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stomach stretches in __ of food   anticipation  
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stomach stretches to __ food as it enters without greatly increasing tension   accommodate  
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stomach pressure __ __ until 1.5L of food is ingested   remains constant  
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increased by distension of stomach by food & gastrin   peristalsis  
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stretching & peristalsis are involved in   gastric motility & emptying  
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peristaltic waves move from the fundus toward the pylorus   propulsion  
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most vigorous peristalsis & mixing action occur close to pylorus   grinding  
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pyloric end of stomach acts as pump that delivers small amounts of chyme into duodenum, simultaneously forcing most of contained material backward into stomach   retropulsion  
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pyloric valve opens slightly   during retropulsion  
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during cephalic phase of gastric motility,   signals from smell & taste receptors reach brain; results in vagus nerve increase stomach motility  
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during gastric phase of gastric motility,   distention of stomach w/food  
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both neural stimulation & gastrin increase   stomach motility  
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intestinal phase of gastric motility   distention of duodenum w/chyme decreased stomach motility  
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stomach __ 4 hours after a meal   empties  
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as chyme enters the duodenum, receptors   respond to stretch- neural reflex  
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fatty, acidic chyme- (by hormones & neural reflexes)   chyme contents  
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decrease stomach motility & gastric emptying (and further duodenal filling)   chyme  
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major organ of digestion/absorption; 20 ft long from pyloric sphincter- ileocecal valve   stomach  
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10"; ‘C’ shaped & is retroperitoneal; bile duct & pancreatic duct open here; entry is controlled by the sphincter of Oddi   duodenum  
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8" long; suspended from posterior abdominal wall by mesentery   jejunum  
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12"; joins large intestine at ileocecal valve; suspended from posterior abdominal wall by mesentery   ileum  
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structural modifications increase surface area for nutrient absorption   circular folds, villi, & microvilli  
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1cm tall; folds of mucosa & submucosa   circular folds  
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circular folds also called   plicae circulares  
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finger-like extensions of the mucosa   villi  
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projections of plasma membrane of absorptive cells ((brush border)   microvilli  
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microvilli contain __ __ enzymes, only found in small intestines; responsible for "fine-tuning"   brush border  
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largest gland in body; right, left, caudate, & quadrate lobes; contains falciform ligament   liver  
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separates the (larger) right & (smaller) left lobes   falciform ligament  
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falciform ligament attaches liver to   anterior abdominal wall  
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hexagonal units; composed of plates of liver cells   liver lobules  
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liver lobules filter & process   nutrient-rich blood  
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liver lobules contain __, which are leaky capillaries btwn plates of hepatocytes that contain macrophages   sinusoids  
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process nutrients reaching them through portal blood; store glucose as glycogen   hepatocytes  
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hepatocytes use __ __ to form plasma proteins   amino acids  
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hepatocytes store __ vitamins   fat-soluble  
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hepatocytes detoxify by   converting ammonia to urea  
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hepatocytes __ bile   secrete  
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liver produces 500- 1000 ml __ which is conveyed to the duodenum   bile/day  
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yellow-green solution; contains bile salts, bilirubin, & cholesterol   bile  
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cholesterol derivatives that function in fat emulsification & absorption   bile salts  
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pigment formed from destruction of red blood cells   bilirubin  
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triglycerides & phospholipids in bile   cholesterol  
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most bile salts are   reabsorbed & recycled  
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most of bilirubin is   lost in feces  
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stores & concentrates bile, by absorbing its water & ions   gall bladder  
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when gall bladder muscle wall contracts it   releases bile into its cystic duct, then flows into bile duct  
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acidic, fatty chyme causes duodenum to   release cholecystokinin (CCK)  
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cholecystokinin (CCK) causes __ of gall bladder   contraction  
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cholecystokinin (CCK) causes sphincter of Oddi to   relax  
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result of cholecystokinin (CCK) release by gall bladder, bile   enters into duodenum  
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pancreatic acini secretes pancreatic juice which breaks down all categories of foodstuff   exocrine function of pancreas  
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release of insulin & glucagon by cells in islets of Langerhans   endocrine function of pancreas  
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watery bicarbonate rich fluid containing enzymes (trypsinogen, chymotrypsin amylase, lipase)   pancreatic juice  
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activated in the duodenum to trypsin   trypsinogen  
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neutralizes acid chyme & provides optimal environment for pancreatic enzymes   HCO3  
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when fatty/acidic chyme enters duodenum secretin & CCK are released, which then   induce secretion of pancreatic juice  
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Vagal stimulation also stimulates release of __ & __ by duodenum   secretin & CCK  
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as chyme enters duodenum   carbohydrates & proteins are only partially digested  
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no fat digestion has taken place   as chyme enters duodenum  
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digestion is __ in small intestine   completed  
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all __ absorption takes place in small intestine   nutrient  
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most of __ __ takes place in small intestine   water absorption  
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delivered from liver & pancreas to small intestines   bile, enzymes, & bicarbonate ions  
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optimal pH required for __ activity in small intestines   enzyme  
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intestinal juice secreted by intestinal glands is __ __   enzyme poor  
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intestinal juice secreted by intestinal glands is __ __ with some mucous   mostly water  
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mix chyme w/bile, pancreatic & intestinal juices, & move food residues through ileocecal valve into large intestine   small intestine movements  
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most common motion of small intestine in which chyme moves backwards & forwards   segmentation  
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during segmentation, chyme is mixed and brought it in contact with   intestinal epithelium for absorption  
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because segmentation allows slow movement of chyme towards ileocecal valve   it allows enough time for digestion & absorption  
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begins with each wave starting distal to previous; meal residue, bacteria, mucosal cells & debris are moved into large intestine via   peristalsis after digestion in small intestines  
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function is to absorb remaining water & some electrolytes from food residue & to eliminate residue as feces   large intestine  
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3 bands of longitudinal smooth muscle in large intestine muscularis   teniae coli  
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pocket-like sacs caused by tone of teniae coli   haustra  
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fat-filled pouches of visceral peritoneum   epiploic appendages  
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teniae coli, haustra, & epiploic appendages are   unique features of large intestines  
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large intestine is subdivided into   cecum, appendix, colon, rectum, & anal canal  
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ascending colon, hepatic flexure, transverse colon, splenic flexure, descending colon, & sigmoid colon   distinct regions of colon  
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portions of colon that are anchored via mesenteries called mesocolons   transverse & sigmoid  
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potion of colon that joins rectum   sigmoid  
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last segment of large intestine that opens to exterior at anus   anal canal  
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anal sphincter composed of smooth muscle   internal  
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anal sphincter composed of skeletal muscle   external  
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anal sphincters are __ except during defecation   closed  
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consist of bacteria surviving small intestine that enter cecum, & those entering via anus   bacterial flora of large intestine  
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bacterial flora of large intestine serve, without harming host, to __ __ __   ferment indigestible carbohydrates  
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bacterial flora of large intestine serve, without harming host, to release   irritating acids & gases (flatus)  
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bacterial flora of large intestine serve, without harming host, to   synthesize B complex vitamins & vitamin K  
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when __ __ is present colon becomes motile   food residue  
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slow short lived movements of haustra occur one after another that move contents of colon   segmentations  
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during segmentations __ & __ is absorbed   water; salt  
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stronger & occur after eating; presence of food in stomach initiates reflex   mass peristalsis  
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mass peristalsis force   feces toward rectum  
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feces are forced into rectum by   mass movements of colon  
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stretching of rectal walls by feces initiates   defecation reflex  
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defecation reflex stimulates   contraction of rectal walls  
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defecation reflex relaxes   internal anal sphincter  
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defecation reflex contracts   external sphincter initially  
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stimulate relaxation of external anal sphincter & defecation occurs under   voluntary signals/conscious controls  
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salivary amylase, pancreatic amylase, & intestinal brush border enzymes are used to   break down carbohydrates  
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chemical digestion of starch; begins in mouth; breaks it down into 2-8 glucose units   salivary amylase  
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continues starch digestion, after salivary amylase   pancreatic amylase  
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convert disaccharides to monosaccharides   brush border enzymes  
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digests protein into polypeptides & a small number of amino acids, in stomach   pepsin  
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break up proteins into smaller peptides, in small intestine; pancreatic enzyme   trypsin & chymotrypsin  
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release free amino acids   brush border peptidases  
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small intestine is sole site of fat digestion brought about by   pancreatic lipases  
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emulsify large fat globules into tiny small droplets of fat which can easily be acted upon by lipases   bile salts  
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bile salts convert triglycerides to   free fatty acids & monoglycerides  
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most absorption is complete by time chyme   reaches ileum  
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amino acids & glucose are absorbed through mucosa of   intestinal villi by active transport  
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amino acids & glucose enter __ __ in intestinal villus & are ultimately transported to __ __ blood   capillary blood; hepatic portal  
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fats digestion products are absorbed by __ & enter blood through __   diffusion; lacteals  
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lymphatic capillaries   lacteals  
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bile salts are also needed for   fat absorption  
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products of fat digestion associate w/bile salts to form very small __ which can come into close contact with epithelial cell surfaces   micelles  
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lipid substances leave micelles & enter intestinal cells   via diffusion  
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microscopic particles of emulsified fat found in the blood and lymph and formed during the digestion of fats   chylomicrons  
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chylomicrons leave epithelial cells, in small intestines, enter __, & are transported to circulation via __   lacteals; lymph  
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chief cell is digestive system cell that   produces an inactive enzyme  
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islet cell is digestive system cell that   makes hormones  
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paneth cell is digestive system cells that   produces lysozyme  
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parietal cell is digestive system cells that   makes intrinsic factor  
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Kupffer cell is digestive system cells that   is phagocytic  
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ingestion is   taking food into the digestive system  
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mechanical digestion is   chewing, mixing, churning, & segmentation of food  
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chemical digestion is   enzymatic degradation of foodstuffs into simpler molecules  
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absorption is   passage of digested materials from lumen of GI tract into blood/lymph  
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defecation is   elimination of indigestible food stuffs  
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mucosa is in __ __ w/ingested food   direct contact  
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submucosa is __ __ with many elastic fibers   dense CT  
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muscularis is composed of longitudinal & circular layer of __ __   smooth muscle  
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serosa is same structure as __ __   visceral peritoneum  
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paratoid gland is large salivary gland   lying behind ear  
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sublingual gland is salivary gland   below tongue  
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submandibular gland is smaller salivary gland   located under jaw  
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lingual frenulum   secures tongue to floor of oral cavity  
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rugae are   folds of mucosal layer  
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pyloric sphincter is located at   inferior end & controls stomach emptying  
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gastroesophogeal sphincter   lies at superior end & regulated movement of food from esophagus  
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body of stomach is   able to stretch & hold large amounts of food  
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cephalic phase is stimulated by   sight/smell of food  
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gastric phase is stimulated by   distention of stomach & low acidity  
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intestinal phase is stimulate by   partially digested proteins & fats  
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inhibits gastric gland secretions   secretin  
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increases the secretions of enzyme rich pancreatic juice   CCK  
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stimulated by partially digested proteins in the stomach and increases gastric gland secretions   gastrin  
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inhibits gastric gland secretions; released in response to presence of fatty chyme in the small intestine   GIP  
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contains openings for bile and pancreatic ducts   duodenum  
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deep permanent folds of the mucosa and submucosa   plicae circulars  
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contains valve that connects to large intestines   ileum  
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finger-like projections of the mucosa   villi  
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AKA brush border   microvilli  
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most is ingested in the form of starch   carbohydrates  
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triglycerides are the most common in diet   lipids  
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built of long chains of amino acids   proteins  
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made up of ribose/deoxyribose sugars & nitrogenous bases   nucleic acids  
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begins carbohydrate digestion in the mouth   salivary amylase  
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digests proteins in small intestines   trypsin  
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emulsifies fats for digestion   bile  
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brush border enzyme that act on disaccharides   sucrase, lactase, maltase  
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in order to prevent self-digestion of the pancreas, activation of pancreatic proteases   occurs in duodenum  
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during deglutition, bolus passes into stomach from esophagus through   gastroesophageal sphincter  
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during the intestinal phase of gastric regulation   stomach is initially stimulated and later inhibited  
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protective collections of lymphocytes and macrophages occur in   Peyer's patches  
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proteins are   main organic molecule digested in the stomach  
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peristalsis   propulsive function that occurs in the esophagus  
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characteristic of the large intestine   contains a large number of bacteria  
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gastrin   regulatory chemical stimulates gastric gland activity and motility  
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layering of the wall of the GI tract, starting from the layer next to the lumen   mucosa, submucosa, muscularis externa, serosa  
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hepatopancreatic ampulla is formed from the union of   bile duct and main pancreatic duct  
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effect of stripping the small intestines of their villi   decreased surface area for absorption would cause weight loss to occur  
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stomach produces   HCl & intrinsic factor  
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final product of carbohydrate digestion   monosaccharides  
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short reflexes in the digestive system are stimulated by   enteric plexus  
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most common cause of peritonitis   burst appendix  
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myxovirus causes   mumps  
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increased activity of anaerobic bacterial activity at the back of the tongue causes   halitosis  
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condition directly associated with an increased risk for heart disease and stroke   periodontitis  
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only stomach function that is essential to life is   secretion of intrinsic factor  
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phase of gastric secretion is considered a conditioned reflex   cephalic  
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hollow organs, like the stomach, that act as reservoirs exhibit   plasticity  
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many of the early food allergies seen in infants are caused by   absorption of whole proteins  
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condition that affects the large bowel and has no physiological or anatomical cause   irritable bowel  
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bile is a(n)   emulsifying agent  
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defecation is mediated by   sympathetic spinal cord reflex  
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three excitatory gastric hormones   gastrin, serotonin, histamine  
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stomach produces serotonin and histamine to __ smooth muscle contraction   regulate  
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triads have a branch of   hepatic artery & portal vein, and bile duct  
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begins in the stomach under the action of pepsin   protein digestion  
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pancreas does NOT have a serosa layer, making it   retroperitoneal  
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pyloric sphincter regulates passage of __ from the stomach into the duodenum   chyme  
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absorbed into lymphatic lacteals   digested fats  
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myenteric plexus controls   motility of digestive tract  
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continuous hollow tube extending from the mouth to the anus; its walls are constructed by the oral cavity, pharynx, esophagus, stomach, and small and large intestines   alimentary canal/GI tract  
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oblique layer allows stomach to churn/mix food, reducing into smaller pieces   modification of muscularis externa  
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muscularis externa differs from that of other GI organs in that   it has three layers of smooth muscle instead of two  
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nonkeratinized stratified squamous epithelium transitions to simple columnar epithelium at   gastroesophageal junction  
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non keratinized stratified squamous epithelium of esophagus relates to its function in that   it is abrasive resistant  
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simple columnar epithelium of stomach relates to its function in that it is   specialized for secretion  
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differentiation of colon from large intestine, is that colon is   where food exits after passing through large intestine  
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structure that suspends small intestine from posterior body   mesentery  
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villi are   finger-like extensions of intestinal mucosa that increase surface area for absorption  
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Peyer's patches are   large collections of lymphoid tissue found in submucosa of small intestine  
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circular folds are   deep folds of mucosa & submucosa that extend completely/partially around circumference of small intestine  
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stomach & oral cavity are   regions that break down foodstuffs mechanically  
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pharynx is   conduit for both air & food  
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lesser/greater omentum & mesentery are   structures continuous w/and representing modifications of peritoneum  
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esophagus/gullet   has no digestive/absorptive function  
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rugae are   folds of gastric mucosa  
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haustra are   sacculations of large intestine  
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microvilli are   projections of plasma membrane of a mucosal epithelial cell  
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ileocecal   valve at junction of small/large intestine  
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small intestine is   primary region of food/water absorption  
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frenulum is   membrane securing tongue to floor of mouth  
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large intestine   absorbs water & forms feces  
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vestibule is   area btwn teeth & lips/cheeks  
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appendix is   worm-like sac that out-pockets from cecum  
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stomach   initiates protein digestion  
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lesser omentum is   structure attached to lesser curvature of stomach  
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small intestine is   organ distal to stomach  
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pyloric   valve controlling food movement from stomach to duodenum  
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soft palate is   posterosuperior boundary of oral cavity  
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small intestine/duodenum is   location of hepatopancreatic sphincter through which pancreatic secretions & bile pass  
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parietal peritoneum is   serous lining of abdominal cavity wall  
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large intestine is   principal site for synthesis of Vit K by microorganisms  
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anus is   region containing 2 sphincters through which feces are expelled from body  
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hard palate is   bone-supported anterosuperior boundary of oral cavity  
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visible portion of tooth in situ   clinical crown  
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material covering tooth root   dentin  
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hardest substance in body   enamel  
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periodontal ligament   attaches tooth to bone & surrounding alveolar structures  
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root   portion of tooth embedded in bone  
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cementum   forms major portion of tooth structure; similar to bone  
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odontoblast   produces dentin  
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pulp   site of blood vessels, nerves, & lymphatics  
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anatomical crown   entire portion of tooth covered w/enamel  
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produces mucus; found in submucosa of small intestine   gastric glands  
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produces product containing amylase that begins starch breakdown in mouth   salivary glands  
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produces whole spectrum of enzymes & alkaline fluid that is secreted into duodenum   pancreas  
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produces bile that secrete into duodenum via bile duct   liver  
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produces HCl & pepsinogen   intestinal crypts  
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found in mucosa of small intestine; produces intestinal juice   duodenal glands  
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paratoid secretions are   mainly serous  
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role of gallbladder is to   store & concentrate bile  
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hepatic artery, portal vein, & common bile duct are three   structures always found in portal triad regions of liver  
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Kupffer cells are found on   lining of sinusoids in liver  
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Kupffer cells functions is to   remove debris from blood  
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liver is dark red in living animal because   this is where hemoglobin from dead RBCs are broken down & recycled  
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secretory cells of pancreas that serve digestive process   acinar cells  
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