THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Chemical digestion takes place throughout your digestive tract. Chemical digestion begins in your mouth with your saliva. The process continues in your stomach and is completed in your small intestine. The majority of chemical digestion takes place in your small intestine.

Detailed explanation-2: -Saliva also brings about a chemical change. An enzyme in saliva begins the breakdown of starch into sugars. An enzyme speeds up chemical reactions in your body.

Detailed explanation-3: -Saliva plays an important role in chemical digestion. As the teeth break food into smaller pieces, saliva mixes with the food. Chemicals called enzymes, found in saliva, break down food into smaller pieces.