Medical terminology about heart

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Across
  1. 2. : disease affecting heart muscle
  2. 4. : surgical procedure where an incision is made in the heart
  3. 5. : inside the heart
  4. 7. : cells that make up the heart muscle
  5. 8. study of the heart
  6. 9. : heart enlargement
Down
  1. 1. : pain in heart region
  2. 3. : heart disease caused by formation of fibrous tissue in the cardiac muscle
  3. 4. : viewing of cardiac structure with use of a scope
  4. 6. : paralysis of heart