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List and briefly describe the action of peptides in the GI tract

 List and briefly describe the action of peptides in the GI tract.

89) List the six types of epithelial cells associated with gastric glands. Briefly describe each one's role in the stomach.

90) Name two functions of cholecystokinin.

91) Put the following steps of fat digestion and absorption in order:

1. Bile salts coat fat droplets.

2. Cholesterol is transported into cells.

3. Chylomicrons are formed.

4. Chylomicrons are released into lymphatic system.

5. Monoglycerides and fatty acids move out of micelles.

6. Pancreatic lipase and colipase break down fats.

A) 1, 6, 5, 2, 3, 4

B) 1, 2, 3, 4, 6, 5

C) 2, 6, 5, 1, 3, 4

D) 6, 3, 4, 1, 2, 5

E) None of the answers are correct.

92) During defecation,

A) stretch receptors in the rectal wall activate sympathetic centers in the spinal cord.

B) stretch receptors in the rectal wall activate parasympathetic centers in the spinal cord.

C) stretch receptors in the rectal wall activate both sympathetic and parasympathetic centers in the spinal cord.

D) the internal anal sphincter is consciously relaxed.

E) the external anal sphincter contracts.

 

Dec 11 2019 View more View Less

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