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11 Cards in this Set
- Front
- Back
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pepsin:
*cleaves *pH optimum *inactivates at pH |
*cleaves: aromatic L-amino acids
*pH optimum: 1-3 *inactivates at pH >5 (e.g., alkaline pancreatic juice in the small intestine) |
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Vmax is determined by (2)
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the number of Na/amino acid co-transporters in the apical membrane
the turnover time of a single Na/amino acid co-transporter |
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Km is determined by the
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affinity of the Na/amino acid co-transporter for amino acids
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ingested carbohydrate composition (3)
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starch (60%)
sucrose (30%) lactose (10%) |
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presence of fats in the duodenum causes release of (2)
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CCK
GIP |
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GIP causes
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decreased gastric acid secretion
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functions of CCK (5)
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slows gastric motility and emptying
stimulates pancreatic enzyme secretion stimulates intestinal fluid secretion stimulates gallbladder contraction for bile secretion relaxes sphincter of Oddi for bile secretion |
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fat digestion begins with _____ and continues with _____ and _____
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lingual lipase
gastric lipase food-bearing lipases with acidic pH optima |
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digestion of fats occurs mostly in the
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jejunum
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enzymes that digest fats in the jejunum (3)
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pancreatic phospholipase A2
cholesterol esterase pancreatic lipase |
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fat-soluble vitamins (4)
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A
D E K |
