Across
- 1. the inner wall of the pericardium
- 3. lubricates the heart during contractions
- 5. conntracts to push blood into ventricle
- 7. deoxyenated blood leaves the right ventricle of the heart
- 9. deoygenated blood returns via veins to the
- 12. blockage of any arteries can cause a
- 13. produces the electrial pulses that drive heart contractions
- 14. the size of a fist
Down
- 2. sudden loss of heart function
- 4. the heart circulates blood through here
- 6. contains the muscle that contracts
- 7. a double walled sac
- 8. oxygenated blood leaves the body via
- 10. this and the tricuspid valve make up the atrioventricular
- 11. separates the two sides of the heart