The Cardiac Cycle

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Across
  1. 4. Muscular tissue of the heart.
  2. 5. Lower chamber of The largest.
  3. 9. Test that records the electrical activity of the heart.
  4. 10. Blood vessels that carry blood away from the heart.
  5. 11. Upper chamber of the heart.
  6. 12. largest artery in the body.
  7. 14. Device that regulates heartbeats.
  8. 15. Phase when the heart muscle contracts.
Down
  1. 1. Related to the heart.
  2. 2. Blood vessels that carry blood to the heart.
  3. 3. Membrane surrounding the heart.
  4. 6. Heartbeat felt through the walls of arteries.
  5. 7. Phase when the heart muscle relaxes.
  6. 8. Smallest blood vessels where gas exchange occurs.
  7. 13. Structures that prevent backflow of blood in the heart.