Digestive tract

The digestive tract includes the mouth, the esophagus, the stomach, the small and large intestines, and the rectum.

The digestive tract is divided into upper and lower parts:

• The upper digestive tract includes the mouth, esophagus, stomach, and first part of the small intestine.
• The lower digestive tract includes the last part of the small intestine, the large intestine, and the rectum.