Across
- 2. Double-layered membrane surrounding the heart
- 3. Innermost lining of blood vessels
- 6. Small artery
- 8. blood Blood that is oxygen-poor
- 9. Relaxation phase of the heartbeat
- 10. Largest artery in the body
- 12. Smallest type of blood vessel
- 14. Small vein
Down
- 1. Instrument to measure blood pressure
- 4. Inner lining of the heart
- 5. Contraction phase of the heartbeat
- 7. One of two lower chambers of the heart
- 10. One of two upper chambers of the heart
- 11. Beat of the heart as felt through the walls of the arteries
- 13. Lower tip of the heart