Heart to heart

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Across
  1. 3. located behind the sternum
  2. 4. bottom of the heart
  3. 7. lubricates the heart as it beats
  4. 11. other name for the tricuspid valve
  5. 13. separates the right and left side of the heart
  6. 14. heart rate faster than 100
  7. 15. valve between the right atrium and right ventricle
Down
  1. 1. receives deoxygenated blood from the vena cava
  2. 2. heart rate slower than 60
  3. 5. lines the interior of the heart
  4. 6. pumps deoxygenated blood to the lungs
  5. 8. thickest chamber of the heart
  6. 9. middle muscle layer of the heart
  7. 10. carries oxygenated blood throughout the body
  8. 12. carries deoxygenated blood back to the heart