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Lab Final AP2
| Question | Answer |
|---|---|
| Explain why the lymphatic system is a one-way system, whereas the blood vascular system is a two-way system. | Blood vessels form a complete circuit from and to the heart. The lymphatic system lacks arteries and begins with blind-ended lymph capillaries. Thus, it is a "return" system only. |
| What name is given to the terminal duct draining most of the body? | thoracic duct |
| Which portion of the body is drained by the right lymphatic duct? | Right half of upper torso and head; right arm. |
| Note three areas where lymph nodes are densely clustered. | |
| Mesentery structure that suspends the small intestine from the posterior body wall | |
| Villi fingerlike extensions of the intestinal mucosa that increase the surface area for absorption | |
| Peyer's patches large collections of lymphoid tissue found in the submucosa of the small intestine | |
| Circular folds deep folds of the mucosa and submucosa that extend completely or partially around the circumference of the small intestine | |
| Oral cavity, Appendix Regions that break down foodstuffs mechanically | |
| Tongue Mobile organ that manipulates food in the mouth and initiates swallowing | |
| Pharynx conduit for both air and food | |
| Greater Omentum, Lesser Omentum, Mesentery Three structures continuous with and representing modifications of the peritoneum | |
| Esophagus The "gullet"; no digestive/absorptive function | |
| Rugae Folds of the gastric mucosa | |
| Haustra Sacculations of the large intestine | |
| Microvilli Projections of the plasma membrane of a mucosal epithelial cell | |
| Ileocecal valve Valve at the junction of the small and large intestines | |
| Small Intestine Primary region of food and water absorption | |
| Frenulum Membrane securing the tongue to the floor of the mouth | |
| Large Intestine Absorbs water and forms feces | |
| Vestibule Area between the teeth and lips/cheeks | |
| Appendix Wormlike sac that outpockets from the cecum | |
| Stomach Initiates protein digestion | |
| Lesser Omentum Structure attached to the lesser curvature of the stomach | |
| Small Intestine Organ distal to the stomach | |
| Pyloric Valve Valve controlling food movement from the stomach into the duodenum | |
| Soft Palate Posterosuperior boundary of the oral cavity | |
| Small Intestine Location of the hepatopancreatic sphincter through which pancreatic secretions and bile pass | |
| Parietal Peritoneum Serous lining of the abdominal cavity wall | |
| Large Intestine Principal site for the synthesis of vitamin K by microorganisms | |
| Anus region containing two sphincters through which feces are expelled from the body | |
| Hard Palate Bone supported anterosuperior boundary of the oral cavity | |
| Catalyst Increase the rate of a chemical reaction without becoming part of the product | |
| Control Provides a standard of comparison for test results | |
| Enzyme Biologic; catalyst; protein in nature | |
| Substrate Substance on which a catalyst works | |
| end product monomers that are absorbable nutrients | |
| Enzyme A biological catalyst | |
| Substrate the molecule acted on by an enzyme | |
| Absorption Process that happens to nutrients after digestion | |
| Pancreatic Lipase Enzyme that hydrolzes lipid in pancreas | |
| pepsin Enzyme that hydrolyzes protein in gastric glands | |
| salivary Amylase Enzyme that hyrolyzes starch in salivary glands | |
| Product The molecule produced as a result of an enzymatic process | |
| Amino Acid Proteins are hydrolyzed into and absorbed as | |
| Monosaccharides Carbohydrates are hydrolyzed into and absorbed as | |
| Mouth Carbohydrate digestion begins in the | |
| Small Intestine Lipid digestion begins in the | |
| Stomach Protein digestion begins in the | |
| Buccal Phase Tongue collects food compacts it and pushes it back to the oropharynx | |
| Pharyngeal-Esophageal Phase 3 actions block food and drink from reentering mouth or nasal cavity or larynx | |
| Peristalsis Wave of muscular contraction that pushes food bolus ahead of it down the esophagus | |
| Digestion Mechanical and chemical breakdown of food into form usable by the body | |
| Chemical Digestion Series of hydrolysis reactions that break dietary macromolecules into monomer carried by digestive enzymes secreted by the salivary glands, stomach, pancreas, and small intestine | |
| Absorption Uptake of nutrient molecules into the epithelial cells of the digestive tract and then into the blood or lymph | |
| defecation The elimination of undigested residue | |
| Lower esophageal sphincter Thickening of smooth muscle layer at esophagus/stomach junction and controls food passage into stomach | |
| Chyme Soupy mixture | |
| alkaline Optimal pH where pancreatic Lipase works best | |
| neutral Optimal pH where salivary amylase works best | |
| acidic Optimal pH where pepsin works best | |
| fats fatty acids and monoglycerides are the end products of... | |
| BAPNA used to test for protein hydrolysis, which was indicated by a yellow color | |
| IKI ( Lugol's solution) used to test for the presence of starch, which was indicated by a blue-black color | |
| pH meter used to test for the presence of fatty acids | |
| Benedict's solution used to test for the presence of maltose, which was | |
| indicated by a blue to green ( or rust) color change | |
| active transport/cotransport monosaccharides-mechanism of absorption & area into which | |
| it is absorbed. | |
| diffusion fatty acids & glycerol-mechanism of absorption & area into which | |
| it is absorbed. | |
| active transport/cotransport amino acids-mechanism of absorption & area into which | |
| it is absorbed. | |
| blood capillaries monosaccharides -Area into which it is absorbed | |
| lymph capillaries ( lacteals) fatty acids & glycerol-Area into which it is absorbed | |
| blood capillaries amino acids-Area into which it is absorbed | |
| Hydrolases are enzymes and are found in the digestive system | |
| false true/false: enzymes can increase the rate of chemical reactions but break up upon completion of the reaction | |
| denaturation When the 3-dimensional structure of a protein is changed | |
| digest the starch in it and cause the bread to taste sweet Chewing a piece of bread for 5 to 6 minutes will: | |
| boiling In the simulated experiments, the enzymes were made to be totally inactive by the following factor/s: | |
| acidic People on a strict diet to lose weight begin to metabolize stored fats at an accelerated rate. This would cause the blood pH to become | |
| shows that the sample had both starch & maltose & that the hydrolysis of the starch was incomplete experimental sample that gives both positive starch & a positive maltose test | |
| 37 ° C The optimal incubation temperature for the enzymes is: | |
| very little there was ______ starch digestion with pH 2 & 9 | |
| cannot, can Salivary amylase _______ cellulose. Bacteria ________ cellulose. | |
| false true or false: BAPNA is a yellow solution | |
| decreases........increases The pH of a fatty solution ______ as enzymatic hydrolysis by lipase_________. | |
| decreases.........increase Bile ________ the surface area of fat molecules to _______ the efficiency of hydrolysis. | |
| no is bile an enzyme? | |
| buccal & pharyngeal-esophageal Swallowing occurs in two phases: the ._________ and .____________. | |
| peristalsis It is possible to swallow water while standing on your | |
| head because the water is carried along the esophagus involuntarily by the process of | |
| gastroesophageal The pressure exerted | |
| by the foodstuffs on the 54.________ sphincter causes it to open, allowing the food to enter the stomach. | |
| segmentation acts to continually mix the foods and to increase the absorption rate by moving | |
| different parts of the chime mass over the intestinal mucosa, but it has less of a role in moving foods along the digestive | |
| tract. | |
| gastrointestinal tract ( GIT) alimentary canal digestive system The tubelike digestive system that extends from the mouth to anus | |
| stratified squamous The epithelium of the esophagus is: | |
| simple columnar The epithelium of the stomach is: | |
| the illium the large intestines does not include | |
| rectum the colon does not include | |
| bile duct hepatic artery | |
| hepatic portal vein 3 structures found in the portal triad of the liver are the branches of the: | |
| the milk teeth | |
| the teeth found in children usually up to 12 yrs. old deciduous teeth" refers to : | |
| lower central incisor The first teeth that usually erupts in a baby is the | |
| 3rd molar The "wisdom teeth" are the: | |
| parotid gland Which of the salivary glands produce/s a secretion that is mostly serous | |
| false the dust of the gallbladder is called the bile duct True or False? | |
| It has more than 2 different layers. & it has an additional obliquely oriented layer. What makes the muscularis externa of the stomach | |
| different from the rest of the intestinal tract? | |
| clinical crown visible part of the tooth in situ | |
| cementum material covering the tooth root | |
| enamel hardest substance in the body | |
| periodontal ligament attaches the tooth to bone & surrounding alveolar structures | |
| root part of tooth embedded in bone | |
| dentin forms the major part of tooth structure, similar to bone | |
| odontoblast .produces the dentin | |
| pulp site of blood vessels, nerves & lymphatics | |
| anatomical crown entire portion of tooth covered w/enamel | |
| duodenal glands . produce/s mucus; found in the submucosa of the small intestine | |
| salivary glands produce/s a product containing amylase that begins starch digestion in mouth | |
| pancreas produce/s a whole spectrum of enzymes & an alkaline fluid that is secreted into the duodenum | |
| liver produce/s bile that it secretes into the duodenum via the bile duct | |
| gastric glands produce/s HCl & pepsinogen | |
| intestinal cysts found in the mucosa of the small intestine; produce/s intestinal juice | |
| sinusoids blood-filled spaces | |
| Kupffer cells special phagocytic cells | |
| liver parenchymal cells pick up oxygen & nutrients | |
| liver parenchymal cells makes the bile | |
| portal arteriole ( branch of hepatic artery) functional blood supply of the liver (supplies the oxygen & nutrients for its cells) | |
| portal venule (branch of hepatic portal vein carries nutrient-rich blood from the digestive organs | |
| falciform ligament suspends the liver from the diaphragm | |
| and anterior abdominal wall | |
| bile digestive product of the liver | |
| common hepatic ducts duct from the liver lobes | |
| bile duct duct from the liver as it enters the duodenum |