Heart

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Across
  1. 4. cava Large vein that returns deoxygenated blood to the heart
  2. 5. Largest artery in the body, carries oxygen-rich blood to tissues
  3. 7. Inner lining of the heart chambers
  4. 10. Valve between the left atrium and left ventricle; also called bicuspid valve
  5. 12. output Volume of blood the heart pumps per minute
  6. 14. Valve between the right atrium and right ventricle
  7. 16. Thickest layer of the heart, made of cardiac muscle
  8. 17. Circulation that moves blood between the heart and body
  9. 18. Circulation that moves blood between the heart and lungs
  10. 20. Ability of the heart to generate its own electrical impulses
  11. 21. Arteries that supply oxygen-rich blood to the heart muscle
Down
  1. 1. Lower chamber of the heart that pumps blood
  2. 2. Doctor specializing in heart conditions
  3. 3. volume Amount of blood pumped per heartbeat
  4. 6. Phase when the heart relaxes and fills with blood
  5. 7. Test that measures electrical activity of the heart
  6. 8. valve Valve that controls blood flow from the right ventricle to the pulmonary artery
  7. 9. Protective sac surrounding the heart
  8. 11. Upper chamber of the heart that receives blood
  9. 13. Part of the brain that controls heart rate
  10. 15. node Pacemaker of the heart, located in the right atrium
  11. 17. Phase when the heart contracts and pumps blood
  12. 19. node Delays electrical impulse before it reaches the ventricles
  13. 20. Valve that controls blood flow from the left ventricle into the aorta