Across
- 2. / Part of the respiratory system
- 5. / The passage for air to the lungs
- 9. / We breathe in oxygen and breathe out carbon _______.
- 11. / Where the nervous system passes through your back
- 12. / Feedback that keeps homeostasis
- 13. / The centre of the nervous system
- 14. / Skeletal system is made up of ______.
Down
- 1. / They vibrate when you're cold to maintain homeostasis
- 3. / This liquid needs to be kept at a very specific pH level in your body
- 4. / _____ is an important nutrient for bodybuilding
- 6. / The liver is an organ of the ________ system
- 7. / Heartbeat from your wrist or neck
- 8. / Human leather
- 10. / When you're cold, your blood protects your ________.