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Question:

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

Chief Cells

Oxyntic Cells

Goblet Cells

Duodenal Cells

Solution:

Correct option is B. Goblet Cells. Goblet cells secrete mucus and bicarbonates present in the gastric juice which plays an important role in lubrication and protection of the mucosal epithelium from excoriation by the highly concentrated HCl. So, the correct answer is 'Goblet Cells'