Lada's crossword

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Across
  1. 3. Condition caused by germs
  2. 8. Main blood vessel
  3. 9. Doctor's assistant
  4. 10. Protection against disease
  5. 11. Part of skeleton
  6. 13. Red liquid
Down
  1. 1. Heart rate
  2. 2. Body's largest organ
  3. 4. Used for chewing
  4. 5. Medical procedure
  5. 6. Organ for hearing
  6. 7. Place for healthcare
  7. 12. Organ for seeing