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Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

1. Chief cells
2. Goblet cells
3. Oxyntic cells
4. Duodenal cells

Correct answer: Goblet cells

Solution

Goblet cells secrete mucus that coats the gastrointestinal lining and shields it from digestive enzymes and mechanical damage. Chief cells make pepsinogen, oxyntic cells secrete acid and intrinsic factor, and duodenal cells are not the main mucus-secreting protective cells.

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