Across
- 4. amount of blood pumped per beat
- 5. transports oxygen
- 7. heart rate multiplied by stroke volume
- 8. organ that pumps blood
- 12. fluid that carries nutrients and hormones
- 13. fights infection
- 16. beats per minute
Down
- 1. site of exchange with tissues
- 2. carries blood away from the heart
- 3. lower chamber of heart
- 6. valve between left atrium and ventricle
- 9. upper chamber of heart
- 10. valve between right atrium and ventricle
- 11. aids in blood clotting
- 14. oxygen carrying protein in red blood cells
- 15. carries blood toward the heart