Across
- 2. Main control organ of the nervous system.
- 3. Body's largest organ and covers the body
- 5. Carries oxygen and nutrients through the body.
- 6. Pumps blood throughout the body.
- 9. Carry messages between the brain and body.
Down
- 1. tubes carrying oxygen-depleted blood towards the heart
- 2. Stores urine before it leaves the body.
- 4. Filters waste from the blood.
- 7. Windpipe leading to the lungs.
- 8. Organs that let you breathe in oxygen.