Across
- 2. System that allows breathing and gas exchange
- 3. System that fights disease and prevents infection
- 4. System that sends messages using the brain and nerves
- 5. System that transport oxygen and nutrients around the body using blood
- 6. System that removes waste from the body
- 8. System that breaks down food for nutrients
- 9. System that provides structure and protects bones
Down
- 1. System that controls movement using muscles
- 2. System involved in producing offspring
- 7. System that uses hormones to control body processes