NEET BIOLOGY

Detailed explanation-1: -Parietal cells secrete hydrochloric acid that helps break down food and intrinsic factor that aids in the absorption of vitamin B12. Chief cells secrete enzymes that support digestion. Neuroendocrine cells secrete various hormones that regulate stomach acidity, hunger, and gastrointestinal motility.

Detailed explanation-2: -The broken up food at the end of this process is called chyme. Gastric juice is secreted by gastric mucosal glands, and contains hydrochloric acid, mucus, and proteolytic enzymes pepsin (which breaks down proteins), and lipase (which breaks down fats).

Detailed explanation-3: -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. A low pH (1.5 to 2) activates pepsin.

Detailed explanation-4: -Three substances are absorbed through the stomach water, Simple sugar like Glucose, and alcohol like ethanol.