Body Systems

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Across
  1. 3. Smallest unit of life
  2. 5. Study of structures
  3. 6. Attached to bones to allow movement and coordination
  4. 9. Lungs are involved in gas exchange
  5. 10. Study of functions
  6. 12. Breaks down food to absorb nutrients and eliminate the rest as waste
  7. 14. Collections of organs working together to perform a function
  8. 17. Made up of the skin, hair, and nails that protect the body.
  9. 18. Maintaining an internal balance
Down
  1. 1. Gametes fuse to create a zygote
  2. 2. Kidneys filter the blood to produce urine and eliminate waste
  3. 4. Fights off infections
  4. 7. Supportive and protective framework for the skin and muscles
  5. 8. Heart and blood vessels transport blood throughout the body
  6. 11. Collections of tissues working together to perform a function
  7. 13. Makes and releases hormones that are transported to the rest of the body
  8. 15. Collections of cells working together to perform a function
  9. 16. Brain and spinal cord communicate to the rest of the body