Across
- 3. Inner endothelial lining of the heart
- 4. Thick muscular layer responsible for heart contraction
- 6. Resistance the ventricle must overcome to eject blood
- 7. Transport medium that carriers dissolved and suspended materials
- 10. AV valve between the left atrium and left ventricle
- 11. another name for the mitral valve
- 12. Chamber that generates the highest pressure in the heart
- 14. Functional circuit that sends blood from the left heart to the body
- 15. Outer visceral layer covering the heart surface
- 17. Hormone that increases sodium and water reabsorption
- 19. Semilunar valve between the right ventricle and pulmonary artery
- 20. Semilunar valve between the left ventricle and aorta
- 21. Outer sac that cushions the heart and reduces friction
- 22. phase of the cardiac cycle when the heart contracts
Down
- 1. Functional circuit that sends blood from the right heart to the lungs
- 2. Organ that acts as the pump of the circulatory system
- 5. Widening of blood vessels that lowers resistance
- 8. AV valve between the right atrium and right ventricle
- 9. Passageways that carry blood throughout the body
- 13. Law that states increased ventricular filling increases contraction force
- 16. pump that returns calcium to the sarcoplasmic reticulum
- 18. Heart valves prevent this from occurring