Across
- 4. In the respiratory system, what gives oxygen to the blood and gets rid of the CO2?
- 5. Your skeletal system is made up of ____
- 6. Which bone is at the very top of your skeletal system, and protects your brain?
- 7. The tubes that carry blood away from your heart are called___
- 10. Which system is responsible for your sense of touch
- 12. Besides Urine, what other waste is removed through the excretory system?
Down
- 1. What in the mouth contains enzymes that break down food?
- 2. What organ acts as a control center in the nervous system?
- 3. Besides the appendix, what organ can be removed in the digestive system without causing too much harm?
- 8. What organ does the most chemical digestion in your digestive system?
- 9. Where does the digestive system start?
- 11. When your biceps relax, your ______ contract