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Answer: 4. Parietal cells

Key idea: Parietal (oxyntic) cells secrete HCl and intrinsic factor.

Intrinsic factor is needed to absorb vitamin B12, which is needed to make red blood cells (erythropoiesis). So parietal cells help it indirectly. Chief cells make pepsinogen, and goblet and mucous cells make mucus.

Answer: option 4.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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