Digestive System

The digestive system processes ingested food and fluids. The organs of the digestive system include the oral cavity, tongue, teeth, salivary glands, pharynx, esophagus, stomach, small intestine, liver, gallbladder, pancreas, and large intestine.

The functions of the digestive system include:

Ingestion of food and fluid
Physical breakdown of incoming food
Moving contents through the digestive tract
Secretion of digestive enzymes, liver products, hydrochloric acid, sodium bicarbonate
Digestion of macronutrients into micronutrients
Absorption of micronutrients into the body
Elimination of waste

This system includes the mouth, the esophagus in the chest, the liver and stomach in the upper abdomen, the small and large intestines in the lower abdomen, and the anus and rectum in the pelvis.

Figure 1: The digestive system.

Referred from:

Article

Organ System