ANATOMY

Detailed explanation-1: -Digestion is a form of catabolism or breaking down of substances that involves two separate processes: mechanical digestion and chemical digestion. Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion.

Detailed explanation-2: -Chemical and mechanical digestion are the two methods your body uses to break down foods. Mechanical digestion involves physical movement to make foods smaller. Chemical digestion uses enzymes to break down food.

Detailed explanation-3: -Examples of physical digestion, also known as mechanical digestion, are the act of chewing, as well as peristalsis in the stomach.

Detailed explanation-4: -Physical digestion (sometimes referred to as mechanical digestion) is the breakdown of food into smaller pieces without chemical change to the food molecules. The processes that take place during physical digestion help to increase the surface area of food for the action of enzymes during chemical digestion.

Detailed explanation-5: -Four examples of chemical digestion are amylase in the saliva, hydrochloric acid in the stomach, pepsin in the stomach, and lipase in the small intestine.