Heart

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Across
  1. 3. chambers that holds blood about leave the heart
  2. 5. this sound caused by leaky valves
  3. 6. muscle in the heart
  4. 9. carries oxygen rich blood to the blood
  5. 10. keeps blood from back flowing
  6. 12. this blood has low oxygen levels
  7. 13. blood carrying vessels with valves
  8. 14. valve between Right atrium and ventricle
Down
  1. 1. arteries carry this with blood to the body
  2. 2. tiny blood vessels
  3. 4. membrane around heart
  4. 5. valve between left atrium and ventricle
  5. 7. blood flows into this, past the aortic valve
  6. 8. this vena cava brings blood from upper body
  7. 11. receiving chambers for blood from out in the body