Cardiac Terms

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Across
  1. 2. where the great vessels enter and leave the heart.
  2. 5. phase of the cardiac cycle when the ventricles contract.
  3. 7. two upper chambers of the heart.
  4. 10. unique ability of the cardiac muscle to contract without nervous stimulation.
  5. 12. thin layer of squamous epithelial cells covering the heart's surface.
  6. 13. the period of cardiac relaxation.
Down
  1. 1. space between the lungs and beneath the sternum where the heart resides.
  2. 3. double-walled sac surrounding the heart and root of the great vessels.
  3. 4. two lower chambers of the heart.
  4. 6. the heart's inner layer.
  5. 8. the study of the heart and the treatment of related disorders.
  6. 9. middle layer of the heart wall.
  7. 11. pointed end of the heart.