Body system

1. found on each side of your chest
5. the lower part of the alimentary canal from at the end of the stomach
7. what the heart pumps through the body
9. an organ that helps you breath
10. protected organs and is a part of the skeletal system
12. runs down through the back from the brain
15. a short loop that runs the heart to the lung
16. the internal organ in which the major part of the digestion of food occurs

2. muscles A large group of muscles in the front of the abdomen that assists in the regular breathing movement
3. where the food travels
4. a colorless, odorless reactive gas, the chemical element
6. what covers the lungs
7. two-headed muscle of the arm
8. tissue what muscles are made of
11. pumps the blood through the circulatory system
13. marrow in side of most bones
14. the inside of a compact bone