Body systems
Across
- 1. what organ removes waste?
- 4. what is the brain all connected by
- 6. what is the center of control for the nervous system?
- 13. what muscle helps move your shoulder?
- 14. what is the biggest part of the brain
- 16. what is movement of blood called?
- 18. smallest bone in the body
- 20. what system helps you breath?
Down
- 2. what muscle is in your digestive system?
- 3. what carries blood back to the heart?
- 5. another name for trachea is ______
- 7. what are the air sacs in your lungs called?
- 8. when you inhale your lungs ______
- 9. what controls blood flow in the heart?
- 10. what connects bones and muscles?
- 11. the nines in your back
- 12. the bone that protects your skull
- 15. bones that protect the heart and lungs
- 17. what muscle pumps blood?
- 19. how many pounds does a brain weigh?