Body systems

4. Responsible for movement
6. Another word for Urinary system
8. The tissues, glands, and organs involved in producing offspring
9. A group of organs that work together in the body to perform a complex function
11. Part of the immune system, defends the body against infections
14. The organs that take in food and liquids and break them down
15. Takes up oxygen from the air we breathe and expels the unwanted carbon dioxide

1. Largest organ of the body that forms a physical barrier between the external environment and the internal
2. Sends messages back and forth between the brain and the body
3. Delivers nutrients and oxygen to all cells in the body
5. Made up of blood vessels that carry blood away from and towards the heart
7. Made up of glands that make hormones
10. Helps the body fight infections and other diseases
12. Consists of the kidneys, ureters, bladder, and the urethra
13. Your body's support structure