A patient has had a partial gastrectomy and later develops megaloblastic anaemia. Loss of which gastric secretion most likely contributed to this problem?
Correct answer: B. Intrinsic factor
- A. Hydrochloric acid
- B. Intrinsic factor
- C. Gastrin
- D. Mucus
Explanation
Intrinsic factor is needed for vitamin B12 absorption in the terminal ileum. Loss of gastric parietal cell function can reduce intrinsic factor and eventually cause vitamin B12 deficiency and megaloblastic anaemia.
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About Digestive System
The digestive system covers the structure and functions of the alimentary canal from mouth to anus, along with the liver, gallbladder and pancreas. It explains mechanical and chemical digestion, the action of major enzymes, absorption through intestinal villi, and how digestion differs from absorption and assimilation.
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