Circulatory System

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Across
  1. 3. delicate blood vessels, smallest blood vessels in your vascular system
  2. 6. drains deoxygenated blood from the myocardium into the cardiac chambers
  3. 7. muscle layer of the heart
  4. 9. red specialized body fluid
  5. 10. transports O2 to cells,size of fist
  6. 11. innermost layer of the heart
Down
  1. 1. relating to the lungs
  2. 2. largest artery of the body,carries blood from the heart to the circulatory system
  3. 4. membrane enclosing the heart
  4. 5. pair of spongy, pinkish-gray organs in your chest
  5. 6. prevents the backward flow of blood
  6. 8. supplies blood to the heart muscle