Across
- 2. Carry blood back to the heart.
- 8. A place where two bones come together.
- 9. Tiny balloons like air sacs in the lungs.
- 11. Controls your metabolism.
- 14. takes in oxygen and eliminates carbon dioxide.
- 15. Supports and protects the body.
- 16. Enables movement of the body and internal organs.
- 17. Organ that pumps blood throughout the body.
- 19. raises/lowers sugar levels in the blood.
- 21. Breaks down food and absorbs nutrients.
- 22. Protects bones when they rub against each other.
- 23. A factor that causes sensory receptors to begin to function.
- 24. Directs sugar to blood cells.
- 25. Chemical messengers secreted by glands.
Down
- 1. Detects information from the environment and controls body functions.
- 3. Removes waste.
- 4. Transports materials to and from cells.
- 5. Controls many processes by releasing chemicals.
- 6. Automatic muscles that you have no control over.
- 7. The maintenance of sturdy internal conditions in an organism
- 10. Line walls of hollow organs.
- 12. The master gland that controls many other glands.
- 13. Creates blood cells.
- 18. The rate at which your cells use energy.
- 20. The endocrine system is made up of these.