Intestines

Welcome to the fascinating world of intestines! The intestines are a vital part of the digestive system, responsible for breaking down food and absorbing nutrients. 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 food takes place. It is a long, coiled tube that is divided into three parts: the duodenum, the jejunum, and the ileum. The small intestine is lined with millions of tiny finger-like projections called villi, which increase the surface area for absorption of nutrients into the bloodstream.

Large Intestine

The large intestine, also known as the colon, is wider than the small intestine but shorter in length. Its main functions include absorbing water and electrolytes from undigested food, forming and storing feces, and housing a large population of beneficial bacteria that aid in digestion.

Study Guide

1. What are the two main parts of the intestines?
2. What are the three parts of the small intestine?
3. What is the function of villi in the small intestine?
4. What are the main functions of the large intestine?

Answers

1. The two main parts of the intestines are the small intestine and the large intestine.
2. The three parts of the small intestine are the duodenum, the jejunum, and the ileum.
3. The villi in the small intestine increase the surface area for absorption of nutrients into the bloodstream.
4. The main functions of the large intestine include absorbing water and electrolytes, forming and storing feces, and housing beneficial bacteria.