AP BIOLOGY

Detailed explanation-1: -The longest part of the alimentary canal is the small intestine and is 22 to 25 feet in length. It begins at the pylorus and terminates at the ileocecal valve and is divided into duodenum, jejunum, and ileum. The partially digested food that reaches the small intestine is absorbed by the duodenum.

Detailed explanation-2: -Small intestine is the longest part of the alimentary canal. It is narrower than the large intestine, but forms the longest section of your digestive tube, The length is about 6.7 meters which is 3.5 times the length of the human body. Absorption of food occurs in the small intestine.

Detailed explanation-3: -Ileum: This last section is the longest part of your small intestine. The ileum is where most of the nutrients from your food are absorbed before emptying into the large intestine.

Detailed explanation-4: -A long tube-like organ that connects the stomach and the large intestine. It is about 20 feet long and folds many times to fit inside the abdomen. The small intestine has three parts: the duodenum, jejunum, and ileum. It helps to further digest food coming from the stomach.