Question

give reasons : hydrochloric acid plays and important role in digestion

short answer please ​

Answer 1

Answer:

HCl i.e. hydrochloric acid plays an very important role in digestion as it is present in our stomach and is responsible for breakdown of food that we eat.

Answer 2

Hydrochloric acid plays and important role in digestion

Reason:

• Hydrochloric acid (HCl) is secreted in stomach.

• The cells secreting HCl are called parietal cells or oxyntic cells located in the fundus and the body of the stomach.

• The secretion of HCl is stimulated by acetylcholine, gastrin and histamine.

• HCl secreted in stomach converts the inactive pepsinogen into active pepsin enzyme.

• HCl also provides the acidic medium for the enzyme pepsin to act on the protein substrate.

• Thus HCl assist pepsin in protein digestion.

• Dur to acidity of the stomach , the incoming pathogens are killed.

• HCl maintains the pH of 0.2 to 4 in gastric secretion.

• However , the wall of the stomach is prevented by the damage of HCl by the mucus secreted by the mucosal membrane of stomach.