Across
- 4. blood cells fight off illness
- 6. the body's largest artery
- 10. help to clot blood or stop bleeding
- 12. the top chambers of the heart
- 14. the bottom chambers of the heart
- 16. is what a doctor uses to listen to the heart
- 18. keep blood from flowing back into the last chamber
Down
- 1. a single beat of the heart
- 2. Atrium is where blood from the body flows into
- 3. attack occurs when not enough blood and oxygen get to your heart
- 5. are tiny blood vessels where oxygen and carbon dioxide are exchanged
- 6. are blood vessels that carry blood away from the heart
- 7. blood cells carry oxygen
- 8. System is made up of your heart, blood vessels, and blood
- 9. is a yellow watery matter that blood floats in
- 11. is the energy or fuel for the cells in the body
- 13. Pressure is the measure of how hard the heart is pushing blood through your arteries
- 15. Ventricle pumps blood back into the body
- 17. are blood vessels that carry blood to the heart