Across
- 2. heart beats too slow
- 4. abnormal rhythm of the heart
- 6. connect veins and arteries
- 7. Controls the flow of blood by opening and closing
- 9. Main organ of the circulatory system
- 10. removes carbon dioxide and relaces it with oxygen
Down
- 1. heart beats too fast
- 3. when plaque builds up in the inside of arteries
- 5. Carrys blood from the heart
- 8. Brings blood to the heart