Cardiovascular and Respiratory system

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Across
  1. 3. to take a picture or tracing of the aorta
  2. 5. abnormal fast heart
  3. 7. one who studies the lungs
Down
  1. 1. good breathing
  2. 2. involuntary contraction of the bronchi
  3. 4. abnormal hardening of fatty substance
  4. 6. one who studies blood