What protects the inner lining of the stomach from the action of acid. under normal conditions?

Correct option is C

The correct answer is (c) Mucus.
· Under normal conditions, the inner lining of the stomach is protected from the action of stomach acid by mucus. Mucus is secreted by the mucous cells in the stomach lining and forms a thick, slippery layer that acts as a barrier, preventing the stomach lining from being eroded by the acidic gastric juices.
Information Booster:
· Enzymes: Such as pepsin are involved in protein digestion but do not protect the stomach lining.
· Gastric Glands: They secrete gastric juice, which includes hydrochloric acid and enzymes, but do not directly protect the lining.
· Villi: Finger-like projections found in the small intestine, not the stomach, which increase the surface area for absorption.