Anatomy recall

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Across
  1. 3. A system comprised of the heart, veins and red blood cells
  2. 7. Comprised of all components of structural hierarchy
  3. 8. A system comprised of the mouth, stomach and intestines
  4. 9. Smallest unit of a persons composition
  5. 10. Essential for functions such as DNA replication
  6. 11. A system comprised of the white blood cells and skin
Down
  1. 1. A system comprised of the brain, spine and nerves
  2. 2. A collection of specialised tissue
  3. 3. Convert nutrients into energy
  4. 4. Constructed from multiple organs working together
  5. 5. A system comprised of glands
  6. 6. A group of similar cells organised to do a job