Heart Valves

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Across
  1. 1. Main actor in the opening and closing of the semilunar valves
  2. 3. Semilunar valves control blood into____ vessels
  3. 7. The papillary muscles are a type of ____
  4. 8. The ____ skeleton provides structural support of the heart valves
  5. 10. The semilunar valve located between the left ventricle and a particular great vessel
  6. 12. Site of the most common valve disorders
  7. 13. Phase of cardiac cycle when papillary muscles are contracted
Down
  1. 1. Backflow of blood into atria
  2. 2. Action of the papillary muscles upon ventricular contraction
  3. 4. The tissue that covers / lines the heart valves
  4. 5. State of the chordae tendineae during diastole
  5. 6. Muscle that is part of the subvalvular apparatus
  6. 9. Narrowing
  7. 11. Heart valves prevent blood from flowing ____