Human Circulatory System

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Across
  1. 2. valve prevents the …… of blood
  2. 6. ...... is a small branch of an artery that leads into a capillary
  3. 7. ...... pathways transport blood between the heart and the lung
  4. 8. ......is used to listening to the heartbeat
  5. 10. cava carries deoxygenated blood back to the heart
  6. 11. A heart attack occurs when the flow of blood to the heart is .....
Down
  1. 1. ...... is a condition where plaque builds up on the inside of arteries
  2. 3. blood vessels with thin walls
  3. 4. two sides of the heart are separated by a thin tissue wall
  4. 5. blood vessels that transport blood out of the heart
  5. 9. valve located between right atrium and left ventricle