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24 Cards in this Set
- Front
- Back
a round or oval-shaped mass of food formed in the mouth after thorough chewing. The food bolus is formed in
preparation for swallowing; after food bolus is formed, it leaves the stomach and enter the small intestine |
food bolus
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longest portion of alimentary canal; 21 feet long; 2.5 cm wide; called small intestine because it is smaller in diameter than the next portion of alimentary canal (the large intestine)
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sall intestine
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3 main regions (small intestine)
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duodenum, jejunum, ileum
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Receives secretions from the liver and the pancreas.
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duodenum
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Part of the small intestine between the duodenum and the ileum.
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jejunum
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Small intestine makes the transition to the large intestine here through what is called the ileocecal valve
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ileum
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Small intestine makes the transition to the large intestine here through what is called the ...
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ileocecal valce
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distal-most portion of the alimentary canal; named because at 6 cm in diameter, it is the widest portion of the canal. It is in the large intestine that most water is absorbed and feces are formed. Ironically, no digestion occurs in the large intestine.
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large intestine
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4 major large intestine organs
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cecum, colon, rectum, anus/anal canal
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opens into the colon and has the appendix, a small, finger-like projection which is attached to its medial portion.
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cecum
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second portion of large intestine; Different areas of the colon have specific terms assigned to them. First is the ascending colon that arises from the cecum and goes in an upward direction (ascends). At approximately the liver, the colon bends sharply, and this area is referred to as the hepatic flexure. The colon then extends in a horizontal direction, and that portion is called the transverse colon. At the left abdominal wall there is another sharp bend in the colon. This is called the splenic flexure and is the beginning of the descending colon, or that
portion of the large intestine that goes downward (descends). Finally, the colon terminates in an S-shaped bend that is referred to as the sigmoid colon |
colon
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6 different areas of colon
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ascending colon, hepatic flexure, transverse colon, splenic flexure, descending colon, sigmoid colon
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arises from the cecum and goes in an upward direction (ascends).
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ascending colon
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at approximately the liver, the colon bends sharply, and this area is ...
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hepatic flexure
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The colon then extends in a horizontal direction, and that portion is called the
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transverse colon
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At the left abdominal wall there is another sharp bend in the colon called...
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splenic flexure
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descending color beings at the...
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splenic flexure
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where colon terminates in an S-shaped bend
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sigmoid colon
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tube approximately 15 cm long located between the sigmoid colon and the anal canal.
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rectum
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forms a muscular opening in the muscles of the pelvic floor that is called the anus. This is surrounded by both involuntary and voluntary muscular sphincters.
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anal canal
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muscular opening in the muscles of the pelvic floor
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anus
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has no villi
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large intestine
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3 longitudinal muscles which run the length of the large intestine
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teniae coli
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sacculations/haustra
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series of bulges in the wall of the
large intestine |