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Cards In This Set
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What are the organs of the foregut?
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Abdominal part of the esophagusStomachDuodenum (proximal to the point of entry of the pancreatic and bile ducts)PancreasLiverGallbladder
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What are the organs that are created from the embryonic midgut?
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Duodenum (distal to the point of entry of the bile and pancreatic ducts)JejunumIleumCecumAppendixAscending colonProximal 2/3 of transverse colon
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What are the organs that are created from the embryonic hindgut?
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Distal 1/3 of transverse colonDescending colonSigmoid colonRectumAnal canal
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What is the fxn of the small intestine?
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Secretion of digestive enzymes, absorption of most of the food
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Most bowel sounds are produced by _______
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Peristaltic activity in the ileum and jejunum
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T/F. The jejunum and the ileum are retroperitoneal, and are therefore the most immobile parts of the digestive tract.
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FALSE. They are peritoneal, so they are the most mobile parts of the digestive tract.
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The jejunum and ileum are suspended to the posterior abdominal wall by _____
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Mesentery (fold of peritoneum that is fan-shaped)
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T/F. There is a sharp demarcation b/t the jejunum and the ileum.
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FALSE. No sharp demarcation.
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What are the 4 characteristic features of the jejunum?
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1. Circular folds are numerous2. Only a few arterial arcades3. Less fat is present in the mesentery4. Only solitary lymphoid nodules present
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What are the 4 characteristic features of the ileum?
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1. Circular folds are few or absent2. Numerous arterial arcades3. More fat is presnet in the mesentery4. Peyer's patches are present (aggregates of lymphoid nodules)
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What is the main role of the large intestine?
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Formation, transport, and evacuation of feces (through absorption of water and secretion of mucus); also excretes calcium, magnesium, and iron from the body.
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What are 4 features of the large intestine that distinguish it from the small intestine?
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1. Teniae coli (ribbon-like bands of outer coat of longitudinal muscle)2. Haustra (sacculations of the intestine produced by the teniae)3. Semilunar folds (located on interior, corresponding to the haustra)4. Epiploic appendices (fat-filled bags of peritoneum hanging off of the large intestine)
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Large intestine consists of ______
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Appendix, cecum, ascending colon, R colic (hepatic) flexure, transverse colon, L colic (splenic) flexure, descending colon, sigmoid colon, rectum, anal canal
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Which is more superior- right or left colic flexure?
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Left colic flexure
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Which structures of the large intestine are retroperitoneal?
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Ascending colon and descending colon and upper portion of the rectum, so no a mesentery(and lower portion of rectum + anal canal are not part of the peritoneal cavity)
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