Digestion and Absorption Question 30
30. Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
(a) Chief cells
(b) Goblet cells
(c) Oxyntic cells
(d) Duodenal cells
Show Answer
Answer : b
Hints & Solution
(b) Goblet cells secretes mucus. It is secreted along entire digestive tract where it lubricates food and lining, coats lining and protects it from mechanical digestion from acid and digestive enzymes. Goblet cells are mostly found scattered in the epithelia of the small intestines and respiratory tract. The morphology of goblet cells reflects their function, with the cell containing all the organelles necessary for the production of glycosylated proteins called mucins.
