Across
- 1. the endocrine system is made up of a group of ______.
- 3. a battery that helps keep a steady pace in an irregular paced heart.
- 12. your body's metabolism is controlled by the _______ gland.
- 13. ________ muscles move even if you don't think about it.
- 14. what organ removes waste from the blood?
- 16. the action of the esophagus pushing food down.
- 17. a factor that causes sensory receptors to begin to function.
- 19. _________ muscles move when you think about it.
- 20. where digestion begins.
Down
- 2. the ________ is a muscle that causes the lungs to expand and contract.
- 4. what system gets rid of waste?
- 5. a place where two bones come together.
- 6. the liver cleans your ______.
- 7. raises blood sugar.
- 8. in what organ does most absorption take place?
- 9. ________ pump blood to the cells.
- 10. a specialized cell transmitting nerve impulses.
- 11. chemical messengers that are secreted by glands.
- 15. lowers blood sugar.
- 18. ________ supplies your muscles with energy.