Systems

4. Digestion starts in the _______.
6. The _______ system takes air into the body and removes air from the body.
7. Digested food can pass through the walls of the small intestine and into the _______.
9. Digestion is completed in the _______ intestine.
10. A _______ is made up of parts that work together to carry out certain functions.
12. Food in the stomach is digested further and mixed with digestive _______.

1. The _______ system carries digested food, water and oxygen in the blood to all parts of the body.
2. The _______ is a tube that connects the mouth to the stomach.
3. _______ is removed from undigested food in the large intestine.
5. The _______ system supports and gives the body shape.
8. The _______ system breaks down food into simple substances.
11. The muscular system helps different parts of the body to _______.