The Digestive System

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Oral cavity (opening to the oral cavity is the mouth) Formed by cheeks, hard & soft palate & tongue Soft palate at back includes a “hangy down” part = uvula During swallowing uvula prevents entry into nasal cavity. If a piece of food gets stuck on the uvula, the gag reflex is initiated Tongue- muscular accessory organ maneuvers food for chewing Adjusts shape for swallowing
Digestion in the oral cavity Mechanical digestion- chewing, grinding, tearing by teeth Chemical digestion-______??______ starts the break down of starch Rounds up food into a soft bolus for swallowing
Page 1 and 2: The Digestive System
Page 3 and 4: Organic compounds Starches >>>>>>>>
Page 5 and 6: What are the two divisions of the d
Page 7 and 8: What are the four accessory organs?
Page 9 and 10: The GI tract is composed of four la
Page 11 and 12: Muscularis- Made of ______ muscle A
Page 13 and 14: What are the GI tract sphincters?
Page 15: What are the major structures of th
Page 19 and 20: Digestion in the stomach Chemical d
Page 21 and 22: http://www.mhhe.com/biosci/esp/2002
Page 23 and 24: 2. Unfolding of rugae stimulates ch
Page 25 and 26: 4. Gastrin regulates the release of
Page 27 and 28: Small Intestine 22-28 feet long 3 p
Page 29 and 30: What happen when chyme/food enters
Page 31 and 32: Liver and gall bladder secrete bile
Page 33: What is bilirubin? Bilirubin is a w
Page 36 and 37: The jejunum is lined with villi and
Page 38 and 39: Longer fatty acids (not so good for
Page 40 and 41: Large Intestine Cecum, colon, rectu
Page 42 and 43: What happens to the remaining mater

The Digestive System

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