Cardiovascular system

123456789101112131415161718192021
Across
  1. 2. Red blood cells
  2. 5. Carries blood from the heart to the lungs and back
  3. 9. Flaps of tissue that prevent blood from flowing backwards
  4. 13. Largest vein in the body
  5. 14. Tip of heart
  6. 16. The composistion of plasma is regulated by
  7. 20. 2nd Layer of the heart
  8. 21. Regulates osmosis between blood and tissues
Down
  1. 1. Carries blood from the heart to the body tissues and back
  2. 3. A shortcut from the artery to the vain
  3. 4. Used in blood clotting
  4. 6. Forms the network between the arterioles and venules
  5. 7. Frequency of the heartbeat
  6. 8. White blood cells
  7. 10. 1st layer of the heart
  8. 11. The stimulating factor for producing blood cells
  9. 12. 3rd layer of the heart
  10. 15. Transport substances or fights infections
  11. 17. Begins the impulse and causes contraction of the atria
  12. 18. Carries oxygenated blood from the heart to the body
  13. 19. Main artery that carries blood from artery to the body