Across
- 2. - The breastbone, behind which the heart is located.
- 4. - The outermost layer of the heart, containing fat tissue.
- 8. - The upper chamber of the heart that receives blood.
- 9. - The tendinous strings that connect heart valves to muscles.
- 10. - The muscle that pulls on the heartstrings.
Down
- 1. - The protective sac surrounding the heart.
- 3. - The "little beams of meat" inside the heart.
- 5. - Relating to the lungs and associated heart valve.
- 6. - The lower chamber of the heart that pumps blood.
- 7. - A heart valve with three cusps.