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