The Heart

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Across
  1. 6. pulmonary-artery
  2. 7. aorta
  3. 8. pericardium
  4. 9. Bi-cusped
Down
  1. 1. atrium
  2. 2. ventricle
  3. 3. pulmonary-veins
  4. 4. Tri-cusped
  5. 5. myocardium