medical terms

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Across
  1. 3. removing a section of the skull to access the brain
  2. 4. lower part of the back
  3. 6. reticulum rough and smooth, found in eukaryotic cell
  4. 9. breaks down molecules into simpler forms
Down
  1. 1. chemical changes that take place in a cell
  2. 2. 21 extra copy of chromosome 21
  3. 3. the skull
  4. 5. near the pelvis
  5. 7. closer to the origin
  6. 8. builds up simple molecules