Cardiovascular system terms

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Across
  1. 4. structure in veins or in the heart that temporarily closes an opening so that blood flows only one direction
  2. 5. smooth layer of endothelial cells that lines the interior of the hear and heart valves
  3. 6. beat of the heart that is felt through the walls of the arteries
  4. 11. small artery
  5. 12. two lower chambers of the heart
  6. 13. upper chambers of the heart
  7. 14. valve between the left atrium and left ventricle
  8. 15. smallest type of blood vessel
Down
  1. 1. located between the right atrium and the right ventricle
  2. 2. largest artery in the body
  3. 3. partition dividing a cavity in the heart
  4. 4. thin-walled vessel the carries blood from the body tissues and lungs back to the heart
  5. 7. flow of blood from the body tissue to the heart and then from the heart back to body tissue
  6. 8. largest vein in the body with both a superior and inferior
  7. 9. largest type of blood vessel that carries blood away from the heart
  8. 10. double-layered membrane surrounding the heart