Across
- 2. - What the heart does to move blood throughout the body.
- 6. - These expand and contract to let help us breath.
- 8. - The part of the respiratory system that air flows through.
- 9. - Carries oxygenated blood throughout the body.
- 10. - Breathing out.
- 12. - Carries oxygenated blood throughout the body, and deoxygenated blood back to the heart.
- 14. - When this relaxes it gets larger and pushes something out.
- 15. - Carry deoxygenated blood back to the heart.
Down
- 1. - The most something can hold.
- 3. - The amount of beats in a certain time.
- 4. - Breathing air into the lungs.
- 5. - To make something bigger.
- 7. - When you have had a tough day and lay on the couch.
- 11. - Removing the air from your lungs.
- 13. - Humans need this to be transported around the body.