What do parietal cells secrete?

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Prepare for the ASPEN Certified Nutrition Support Clinician Test with flashcards and multiple choice questions, each question includes hints and explanations. Ensure your success on the exam!

Multiple Choice

What do parietal cells secrete?

Explanation:
Parietal cells, located in the stomach’s glands, secrete hydrochloric acid and intrinsic factor. The acid lowers gastric pH to enable digestion and activates pepsinogen to pepsin, while intrinsic factor is essential for the absorption of vitamin B12 in the terminal ileum. The other secretions come from different cells or organs: mucus and bicarbonate protect and line the stomach, pepsinogen is released by chief cells, amylase comes from salivary glands or pancreas, and bile acids are produced by the liver.

Parietal cells, located in the stomach’s glands, secrete hydrochloric acid and intrinsic factor. The acid lowers gastric pH to enable digestion and activates pepsinogen to pepsin, while intrinsic factor is essential for the absorption of vitamin B12 in the terminal ileum. The other secretions come from different cells or organs: mucus and bicarbonate protect and line the stomach, pepsinogen is released by chief cells, amylase comes from salivary glands or pancreas, and bile acids are produced by the liver.

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