Circulatory System

123456789101112131415161718192021
Across
  1. 3. delivers oxygen, nutrients, hormones, and other important substances to cells and organs in the body
  2. 6. originate from the root of the aorta
  3. 7. outer layer of the heart wall
  4. 11. liquid portion of the blood
  5. 12. specialized body fluid
  6. 14. small colorless disk without a nucleus and is involved in clotting
  7. 15. pump blood out of the heart and into either systemic or pulmonary circulation
  8. 18. cell that helps fight infection and other diseases
  9. 20. drain deoxygenated blood from the myocardium
  10. 21. muscle layer of the heart
Down
  1. 1. is the longest venous vessel of the heart
  2. 2. fist-sized organ that pumps blood throughout the body
  3. 4. acronym for red blood cells
  4. 5. a hollow part or cavity in an organ
  5. 8. Who am I
  6. 9. has flaps that make sure blood flows in the right direction
  7. 10. largest artery of the body
  8. 13. thin-walled chambers that receive blood from the veins
  9. 16. protection to the valves and heart chambers
  10. 17. make up a major part of the circulatory system
  11. 19. large vein that carries blood to the heart from other areas of the body