HUMAN NUTRITION

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: -During digestion, proteins are broken down into amino acids through hydrolysis. The amino acids dissolve in our blood and are carried to tissues and organs.

Detailed explanation-3: -No digestion occurs in the esophagus. After passage through the esophagus, the bolus will enter the stomach and undergo mechanical and chemical digestion. Mechanical digestion in the stomach occurs via peristaltic contractions of the smooth muscle from the fundus towards the contracted pylorus, termed propulsion.

Detailed explanation-4: -The chemical reaction that’s central to chemical digestion is called hydrolysis. It’s the process of incorporating water molecules into larger molecular structures. This breaks them down into smaller parts and makes it much easier for your cells to absorb the nutrients in your food.