Across
- 5. X-ray imaging of blood vessels with contrast
- 6. Membrane surrounding the heart
- 8. Narrowing of the mitral valve
- 10. Lower tip of the heart
- 11. Smallest type of blood vessel
- 13. Record of the electrical activity of the heart
- 15. Arteries on sides of neck branching from the aorta
- 16. Condition of rapid heartbeat
- 17. Relaxation phase of the heartbeat
- 18. Small vein
Down
- 1. Largest artery in the body
- 2. Rapid, irregular contractions of the heart
- 3. Largest vein in the body
- 4. Lower chamber of the heart
- 7. Inflammation of a vein
- 9. The heart beats in the embryo before it is supplied with _______
- 12. Small artery
- 14. Muscular middle layer of the heart