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CH 26 digestive

QuestionAnswer
What does the digestive system do? ingests, mixes, transports and breaks down food
what is bolus? food mixed with saliva
what is chyme? acidic fluid containing gastric juices and partially digested food
2 categories of organs for digestive system? GI tract and accessory digestive organs
what is Motility? voluntary and involuntary contractions that mix and move materials through GI tract
what is secretion? release of mucin or fluids such as acid or bile
what is the palate? roof of oral cavity
approximately how much is the hard palate of the palate? anteriorly 2/3
approximately how much is the soft palate of the palate? posterior 1/3
what are fauces? opening from oral cavity to oropharynx
what are the 3 pairs of extrinsic salivary glands that make most saliva? parotid, submandibular, sublingual glands
what are the largest salivary glands? parotid salivary glands
2 types of secretory cells found in salivary glands? mucous and serous cells
what are the teeth collectively known as? dentition
what are permanent teeth types? incisors, canines, premolars, molars
what serous membranes is the abdominopelvic cavity lined with? parietal, visceral peritoneum, peritoneal cavity
what are mesenteries? folds of peritoneum that support and stabilize intraperitoneal GI tract organs
types of mesenteries? greater, lesser omentum, mesentery proper, mesocolon
what are peritoneal ligaments? folds of peritoneum that connect structures
what 4 tunics is the GI wall composed of? mucosa, submucosa, muscularis, serosa
what is mucosa composed of? inner epithelium
what is submucosa composed of? dense irregular connective tissue
what is muscularis composed of? two layers of smooth muscle
what is serosa/adventitia composed of? areolar connective tissue and covered by visceral peritoneum
what 3 unpaired arteries supply the abdominal GI tract? celiac trunk, superior & inferior mesenteric artery
what are the 3 phases of swallowing? voluntary phase, pharyngeal phase, and esophageal phase
what 4 regions is the stomach composed of? cardia, fundus, body and pylorus
what is stomach lined by? simple columnar epithleium
what 5 types of secretory cells form the gastric epithelium? surface mucous cells, mucous neck cells, parietal cells, chief cells, enteroendocrine cells
small intestine consists of 3 segments called? duodenum, jejunum, ileum
what are intestinal glands? invaginations of mucosa that release hormones like secretin
what does the large intestine consist of? cecum, ascending, transverse, descending, sigmoid colon, rectum and anal canal
what is haustra? teniae coli that's bunched up into many sacs
examples of accessory digestive organs? liver, gall bladder, pancreas, biliary apparatus
what are the 3 regions of the gallbladder? neck, body and fundus
what is the biliary apparatus? network of thin ducts that transport bile from liver and gall bladder to duodenum
Created by: shinykwon
 

 



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