NEET BIOLOGY

Detailed explanation-1: -Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.

Detailed explanation-2: -Lipase (made in the pancreas; breaks down fats) Protease (made in the pancreas; breaks down proteins)

Detailed explanation-3: -An enzyme made in the stomach that breaks down proteins in food during digestion.

Detailed explanation-4: -Glands in the mucous-membrane lining of the stomach make and store pepsinogen. Impulses from the vagus nerve and the hormonal secretions of gastrin and secretin stimulate the release of pepsinogen into the stomach, where it is mixed with hydrochloric acid and rapidly converted to the active enzyme pepsin.