Multiple choice

The flow of gastric juice in influenced by the hormone:

  1. pancreozymin

  2. cholecystokinin

  3. gastrin

  4. secretin
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C Correct answer
Explanation

Gastrin, secreted by G cells in the stomach lining, stimulates parietal cells to release HCl and chief cells to release pepsinogen. Pancreozymin and cholecystokinin stimulate pancreatic enzymes, while secretin stimulates bicarbonate secretion - these don't directly control gastric juice.

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