HUMAN NUTRITION

Detailed explanation-1: -Gastric juice is made up of digestive enzymes, hydrochloric acid and other substances that are important for absorbing nutrients – about 3 to 4 liters of gastric juice are produced per day. The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins.

Detailed explanation-2: -Acid that is released into the stomach from glands in the stomach wall. It helps digest food. Gastric acid is made of hydrochloric acid.

Detailed explanation-3: -In addition to the circular and longitudinal muscles, the stomach has diagonal muscles which make it possible for the stomach to twist and churn. This kneading effect actually breaks up food.

Detailed explanation-4: -Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.