Heart

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Across
  1. 2. valve The heart valve that regulates the flow of blood from the right ventricle to the right atrium.
  2. 5. Rapid or irregular heartbeat
  3. 8. Largest vein in the body.
  4. 10. Unsuitable for a surgical procedure
  5. 13. Small artery.
  6. 14. The narrowing of an opening.
  7. 15. The fibrous muscle tissue of the heart
Down
  1. 1. The tough, protective sac surrounding the heart
  2. 3. A large artery in the thigh that connects to the aorta
  3. 4. The valve that regulates the flow of blood from the pulmonary artery to the right ventricle
  4. 6. The largest artery in the body, it receives blood from the heart that has been oxygenated in the lungs, and delivers this blood to the body and brain
  5. 7. The blood vessels that return de-oxygenated blood to the heart and lungs.
  6. 8. The large, lower blood-pumping chambers of the heart.
  7. 9. Small vein.
  8. 11. The blood vessels that carry oxygen-rich blood away from the heart and lungs
  9. 12. Abnormal swishing sound caused by improper closure of the heart valve