# Digestive system

The digestive system is the tube and glands that take in food, break it down, absorb the nutrients, and expel the waste — from the mouth to the anus.

## About digestive system

Gray's Anatomy (1918) traces the alimentary canal from mouth to anus and describes the accessory organs — salivary glands, liver, gallbladder, and pancreas — that pour their secretions into it.

## Questions

### What is the food pipe called?

A muscular tube about 25 cm long.

### What is the stomach?

A muscular, sac-like organ.

### What is the small intestine?

The longest part of the digestive tract, about 6 m long.

### What is the large intestine?

The last major part of the digestive tract, about 1.5 m long.

### What is the colon?

The main portion of the large intestine.

## Sources

- [Gray's Anatomy of the Human Body (1918)](https://www.bartleby.com/107/)

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