AP BIOLOGY

Detailed explanation-1: -Digestion involves mixing food with digestive juices, moving it through the digestive tract, and breaking down large molecules of food into smaller molecules. Digestion begins in the mouth, when you chew and swallow, and is completed in the small intestine.

Detailed explanation-2: -The small intestine has 3 parts namely-the duodenum (c-shaped), jejunum, and ileum. Complete digestion of food takes place in the ileum. After being digested the food is absorbed by the blood vessels present in the small intestine.

Detailed explanation-3: -In the small intestine, food is broken down into liquid and most of its nutrients are absorbed. The waste is passed on to the large intestine.

Detailed explanation-4: -The small intestine carries out most of the digestive process, absorbing almost all of the nutrients you get from foods into your bloodstream. The walls of the small intestine make digestive juices, or enzymes, that work together with enzymes from the liver and pancreas to do this.