Across
- 4. removes waste and extra water to make urine
- 7. carry oxygen and nutrients to your body's tissues
- 9. pumps blood from the heart to the lungs to get oxygen
- 10. helps maintain fluid balance in the body
- 11. gland that the female reproductive cells are produced
- 14. a highly complex part of an animal that coordinates its actions and sensory information
- 17. makes enzymes and hormones
- 18. carries nerve signals from your body to the brain
- 19. a passive biological system that removes excess, unnecessary materials from the body fluids of an organism
- 20. a complex network of glands and organs
- 22. part of the skeletal system, in your head
Down
- 1. enzymes that help the body digest food and water
- 2. a biological system consisting of specific organs and structures used for gas exchange in animals and plants
- 3. a collection of internal and external organs — in both males and females — that work together for the purpose of procreating
- 5. the largest organ of the body that forms a physical barrier
- 6. your body's central framework
- 8. takes food in and breaks it down
- 12. air-filled organs located on either side of the chest
- 13. pumping blood around your body, constantly beating
- 15. protects your body from harm, outermost layer of your body
- 16. fights invading germs in the blood
- 21. It permits movement of the body, maintains posture, and circulates blood throughout the body