What Is Included in the Digestive System?

The digestive system is made up of the digestive tract and other organs that aid in digestion.

The digestive tract is a series of hollow organs joined in a long, twisting tube from the mouth to the anus, consisting of the following:

• mouth
• esophagus
• stomach
• small intestine
• large intestine
• rectum
• anus

Organs that help with digestion, but are not part of the digestive tract, include the following:

• tongue
• glands in the mouth that make saliva
• pancreas
• liver
• gallbladder

Parts of other organ systems, such as nerves and blood, also play a major role in the digestive process.