The Digestive System: Mouth, Stomach, and Intestines

The mouth is the first part of the digestive system that food enters. It is where food is chewed and mixed with saliva to form a soft mass called a bolus.

Saliva has several functions in the mouth, including moistening food, breaking down carbohydrates, and killing bacteria.

The epiglottis is a flap of cartilage that prevents food from entering the windpipe when swallowing.

The stomach has several functions, including breaking down food into smaller pieces, absorbing nutrients from food, and storing food until it can be digested.

The primary function of the small intestine is to absorb nutrients from food.

The primary function of the large intestine is to absorb water from food.

The anus is the final part of the digestive system. It is where waste products from the body are eliminated.

Enzymes play a crucial role in the digestive system by breaking down food into smaller molecules that can be absorbed by the body.

Bile is a fluid produced by the liver and stored in the gallbladder. It helps to break down fats in the small intestine.

The pancreas produces enzymes that help to break down carbohydrates, proteins, and fats in the small intestine.

The liver produces bile, which helps to break down fats in the small intestine.

The gallbladder stores bile produced by the liver until it is needed to break down fats in the small intestine.

The appendix does not have a known function in the digestive system.

The colon absorbs water from food and stores waste products until they can be eliminated from the body.

The rectum stores waste products until they can be eliminated from the body.