Across
- 3. bones that protect the heart and lungs
- 4. a smooth flexible substance that covers the tip of your bones where they meet and provides movement without frictions
- 7. a hollow organ that holds food as its being mixed with enzymes
- 10. four tiny glands that work together and control the level of calcium in the blood
- 14. makes the body move
- 15. what allows the muscles to move the bone
Down
- 1. hollow areas between the bones in your head that regulate the temperature and humidity of the air you breath
- 2. bands of strong connective tissue that hold bones together
- 5. hollow organ that allows you to talk and make noises
- 6. makes hormones that control the rate at which cells burn fuel from food to make energy
- 8. muscle that helps your lungs inhale and exhale
- 9. where two or more bones come together
- 11. the body's central framework
- 12. tube that delivers air from your mouth and nose to the trachea
- 13. organs that get oxygen from the air and move it to your blood