Blood vessels & types

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Across
  1. 2. Direction that veins carry blood from the heart
  2. 3. scientific name for a red blood cell
  3. 6. Type of blood vessel involved in nutrient and gas exchange
  4. 7. cell The thickness of a capillary
  5. 8. The number of blood types in the human body
  6. 10. The liquid portion of the blood that makes up 55%
  7. 12. crab An ocean animal who has blue blood
  8. 14. Direction that arteries carry blood from the heart
  9. 15. A structure that arteries do not have
Down
  1. 1. Largest artery in the body
  2. 4. The abbreviation for a red blood cell
  3. 5. The procedure when someone gives and gets blood
  4. 9. The color of blood when there is no oxygen
  5. 11. Cava Largest vein in the body
  6. 13. a gas that is carried and transported by blood
  7. 16. The blood vessel with the thickest wall