Intestines

The intestines are a part of the digestive system, which is responsible for breaking down food and absorbing nutrients into the body. There are two main parts of the intestines: the small intestine and the large intestine.

Small Intestine

The small intestine is where most of the digestion and absorption of nutrients takes place. It is a long, coiled tube that is divided into three sections: the duodenum, the jejunum, and the ileum. The walls of the small intestine are lined with tiny finger-like projections called villi, which increase the surface area for absorption of nutrients.

Large Intestine

The large intestine is wider than the small intestine and is responsible for absorbing water and electrolytes from the remaining indigestible food matter and forming feces. It is made up of the cecum, colon, and rectum. The colon is further divided into the ascending colon, transverse colon, descending colon, and sigmoid colon.

Study Guide

1. What are the two main parts of the intestines?
2. Where does most of the digestion and absorption of nutrients take place?
3. What are the three sections of the small intestine?
4. What are the tiny finger-like projections that increase the surface area for absorption of nutrients?
5. What is the main function of the large intestine?
6. What are the parts of the large intestine?

Understanding the structure and function of the intestines is important for learning about the digestive system and how the body processes food. It's also essential for understanding how nutrients are absorbed and waste is eliminated from the body.