Human Body Systems

12345678
Across
  1. 1. Body system that releases hormones
  2. 4. Body system that defends the body from injury and illness
  3. 5. Body system that brings in oxygen and releases waste gases
  4. 8. Body system that transmits signals throughout the body
Down
  1. 2. Body system that breaks down food for the body to absorb its nutrients
  2. 3. Body system that takes away waste and moves nutrients and oxygen through the body
  3. 6. Tube that brings sustenance to the stomach
  4. 7. Body system that is used to produce offspring