Across
- 3. acts like a complex switchboard
- 4. carry blood away from the heart and veins
- 6. relay messages from the cerebrum to the cerebellum.
- 8. the strongest muscle in your body
- 9. contains the smallest muscles
- 11. between the left ventricle and the aorta
- 13. largest part of the brain.
- 18. the amount of different types of muscles
- 19. a network of tiny blood vessels
Down
- 1. air fills a large portion of the millions of alveoli
- 2. protects your lungs
- 5. runs from the brain down through the back.
- 6. another name for your kneecap
- 7. the air is warmed and humidified here
- 10. the longest and strongest bone in the body
- 12. hardest working muscle in the body
- 14. covers the air-only passage when we swallow
- 15. separates the left atrium from the left ventricle.
- 16. the continuation of the airway below the larynx.
- 17. another name for your collar bone