ANATOMY

Detailed explanation-1: -Once the bolus reaches the stomach, mixes with gastric juices, and becomes reduced in size, the food mass becomes known as chyme.

Detailed explanation-2: -These mechanical and chemical actions further break down food into a substance called chyme. It takes about a minute to chew a piece of food into a bolus and a few seconds to swallow it. Once in the stomach foodstuffs take a few hours to become chyme.

Detailed explanation-3: -The bolus then reaches the stomach, where more mechanical and chemical digestion take place. The muscles in the stomach walls churn the bolus (mechanical), allowing it to mix with digestive enzymes and gastric acids (chemical). This process converts the bolus into a liquid called chyme.

Detailed explanation-4: -Chyme or chymus (/kaɪm/; from Greek khymos, “juice") is the semi-fluid mass of partly digested food that is expelled by a person’s or an animal’s stomach, through the pyloric valve, into the duodenum (the beginning of the small intestine).