Cardiovascular System

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Across
  1. 2. Smooth layer of cells lining the interior of the heart
  2. 7. Structure that prevents backward flow of blood
  3. 8. Blood vessels that carry blood towards the heart
  4. 9. Process of preventing and stopping bleeding
  5. 11. Outermost layer of the heart wall
  6. 13. Relating to the lungs
  7. 14. Tiny blood vessels where gas exchange occurs
Down
  1. 1. Iron-containing protein in the red blood cell that carriers oxygen
  2. 3. Pertaining to the heart and blood vessels
  3. 4. Middle layer of the heart wall, composed of muscle tissue
  4. 5. Blood vessels that carriers blood away from the heart
  5. 6. Rhythmic throbbing of the arteries, often felt at the wrist.
  6. 8. Tubes that carry blood
  7. 10. Partition separating the chambers of the heart.
  8. 12. Largest artery in the body