Large Intestine

The large intestine, also known as the colon, is the final part of the digestive system. It is a tube-like organ that is responsible for absorbing water and electrolytes from undigested food matter and forming feces for elimination from the body.

Anatomy of the Large Intestine

The large intestine is approximately 5 feet long and consists of several parts, including the cecum, ascending colon, transverse colon, descending colon, sigmoid colon, and rectum. The main function of the large intestine is to remove water from the undigested food residue and to store and eliminate waste products from the body.

Functions of the Large Intestine

The major functions of the large intestine include:

• Reabsorption of water and electrolytes from undigested food
• Formation and storage of feces
• Elimination of waste products from the body

Key Concepts to Remember

When studying the large intestine, it is important to remember the following key concepts:

• The large intestine is the final part of the digestive system
• It is responsible for absorbing water and electrolytes from undigested food matter
• The main parts of the large intestine are the cecum, colon, and rectum
• Its primary function is to form and store feces for elimination

Study Guide Questions

1. What is the main function of the large intestine?
2. What are the main parts of the large intestine?
3. How does the large intestine contribute to the digestive process?
4. What happens to undigested food matter in the large intestine?
5. How does the large intestine form and eliminate feces from the body?