Across
- 2. Red blood cells
- 5. Carries blood from the heart to the lungs and back
- 9. Flaps of tissue that prevent blood from flowing backwards
- 13. Largest vein in the body
- 14. Tip of heart
- 16. The composistion of plasma is regulated by
- 20. 2nd Layer of the heart
- 21. Regulates osmosis between blood and tissues
Down
- 1. Carries blood from the heart to the body tissues and back
- 3. A shortcut from the artery to the vain
- 4. Used in blood clotting
- 6. Forms the network between the arterioles and venules
- 7. Frequency of the heartbeat
- 8. White blood cells
- 10. 1st layer of the heart
- 11. The stimulating factor for producing blood cells
- 12. 3rd layer of the heart
- 15. Transport substances or fights infections
- 17. Begins the impulse and causes contraction of the atria
- 18. Carries oxygenated blood from the heart to the body
- 19. Main artery that carries blood from artery to the body