4th Grade Systems Review Homework

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Across
  1. 2. This system allows your body to move using muscles.
  2. 3. This system is made of bones and helps support and protect your body.
  3. 6. This system allows humans and animals to have babies.
  4. 9. This system helps you breathe by bringing oxygen into your lungs.
Down
  1. 1. This system moves blood around the body using the heart and blood vessels.
  2. 4. This system helps remove waste from your body through urine and sweat.
  3. 5. This system is the outer layer of the body and protects you from germs.
  4. 7. This system breaks down food so your body can use the nutrients.
  5. 8. A part of the body that has a special job, like the heart or lungs.