Across
- 3. rhythm
- 5. a conditon where the heart beats with an
- 9. open to let the blood through
- 10. when the heart beats too slow
- 11. through
Down
- 1. when a valve dosen't open enough to let the
- 2. connects veins and arteries
- 4. take deoxygenated blood to the lungs and heart too
- 6. when the heart beats too fast
- 7. take oxygenated blood to the body
- 8. pumps the blood