AP BIOLOGY

Detailed explanation-1: -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).

Detailed explanation-2: -After being stored and mixed with hydrochloric acid in the stomach for about 30 to 60 minutes, chyme slowly enters the duodenum through the pyloric sphincter.

Detailed explanation-3: -Chyme passes from the stomach into the duodenum. There it mixes with bile and pancreatic juices that further break down nutrients. Finger-like projections called villi line the interior wall of the small intestine and absorb most of the nutrients.

Detailed explanation-4: -The first part of the small intestine. It connects to the stomach. The duodenum helps to further digest food coming from the stomach.

Detailed explanation-5: -Positioned inferiorly to the stomach, the duodenum is approximately 25 to 30 cm long. Interestingly enough, this portion of the small intestine got its name due to its length. In Latin, the term “duodenum” means 12 fingers, which is roughly the length of the duodenum.