When you eat, your body turns the food into energy and extracts vitamins, minerals and other nutrients to help it work properly. This process is called digestion. The parts of the body that are involved in digestion are called the digestive system.
GI tract
The central part of the digestive system is a winding muscular tube called the GI (gastrointestinal) tract. It includes the:
mouth
pharynx
esophagus
stomach
small intestine
large intestine
anus.
Other parts of your body, called accessory organs, help the GI tract to digest food. These include the: