Assertion (A) HCl present in the gastric juices, maintains a strong pH (1.5-2.5) in the stomach, but does not digest the walls of stomach and duodenum. Reason (R) Protection to intestinal wall and stomach from the actions of HCl is provided by the mucus secreted by goblet cells, bicarbonates from pancreas, mucus and bicarbonates from Brunner's gland.

Question

Assertion (A) HCl present in the gastric juices, maintains a strong pH (1.5-2.5) in the stomach, but does not digest the walls of stomach and duodenum. Reason (R) Protection to intestinal wall and stomach from the actions of HCl is provided by the mucus secreted by goblet cells, bicarbonates from pancreas, mucus and bicarbonates from Brunner's gland. (A) If both A and R are true and R is the correct explanation of A (B) If both A and R are true, but R is not the correct explanation of A (C) If A is true, but R is false (D) If A is false, but R is true

Tardigrade Admin · Accepted Answer

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
IHydrochloric acid present in the gastric juices maintains a strong

p H

in stomach. But the wall of stomach is not digested by its action because goblet cells secrete mucus which continuously lubricates the innermost layer in the stomach and intestine. The wall is also protected by the bicarbonates secreted by pancreatic juices and Brunner's gland.