Body parts and health

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Across
  1. 2. the top part of the leg
  2. 3. largest part of the large intestine
  3. 5. connects the head with the rest of the body
  4. 6. the major muscle of respiration
  5. 7. animals that were used by doctors in the past to extract blood
  6. 9. the bones between your shoulder and neck
Down
  1. 1. the powerhouse of the cell
  2. 4. a sharp instrument used for surgery
  3. 8. instrument used for listening to the heartbeat of a patient