What are the 3 main organ functions of digestive system?

The three main organ functions of the digestive system are:

Ingestion: This is the process of taking in food through the mouth. The teeth, tongue, and saliva all play a role in ingestion.

Digestion: This is the process of breaking down food into smaller molecules that the body can absorb. The stomach, small intestine, and large intestine all play a role in digestion.

Absorption: This is the process of taking in nutrients from digested food. The small intestine and large intestine both play a role in absorption.