Across
- 4. deoxygenated blood from body to lungs
- 7. between left atrium and left ventricle
- 10. middle layer of the heart
- 13. whoosing or swishing sound.
- 14. prevent backflow of blood
- 15. deoxygenated blood travels through here
- 16. What pumps blood to all parts of the body
Down
- 1. contraction of heart
- 2. closing of pulmonary and aortic valves
- 3. oxygenated blood from lungs to body
- 5. relaxation of heart
- 6. inner later of heart
- 8. closing of two atrioventricular valves
- 9. outside layer of heart
- 11. oxygenated blood travels through here
- 12. between right and left atrium