Across
- 4. surround the arteries
- 6. a pair of elastic bands
- 9. deliver oxygen to the cells of the body
- 10. when a blood vessel in the brain is blocked
- 11. create blood pressure
- 13. a collection of organs that transport blood throught the body.
- 14. a blood vessel that carries away from the heart
- 15. abnormally high blod pressure
Down
- 1. the flow of blood from the heart to the lungs
- 2. can mean the same a respiration
- 3. part of the heart that prevent blood from going backwards
- 5. oxygen used by cells releasing stored energy
- 7. tiny air sacs
- 8. a dome-shaped muscle
- 12. the main passage way into and out of the respiratory system