Human Body Systems
The Circulatory System
Our body needs food to provide it with energy, vitamins, and minerals. However, in order use food, we must first break it down into substances that the various organs and cells in our body can use. This is the job of our digestive system.
The digestive system is needed to digest our food. The entire length of our digestive system is around 20 to 30 feet! Here are the major stages of the digestive system:
4. Small Intestine
5. Large Intestine