Across
- 3. a doctor who specializes in the study or treatment of heart diseases and heart abnormalities
- 4. an abnormally slow heart action
- 6. an instrument that graphically registers movements of the heart
- 9. chronic disease of the heart muscle
Down
- 1. the innermost layer of the heart
- 2. an abnormally rapid heart rate
- 5. enlargement of the heart
- 6. the study of the heart and its action and diseases
- 7. inflammation of the heart
- 8. the outermost layer of the heart