Across
- 3. The cord that sends messages from your brain to your nerves
- 5. The brains reaction from external forces that include sight, smell, taste, touch, and hearing
- 7. Small sacs in the lungs
- 8. The dome shaped series of bones that protects the brain
- 10. Receptacles all over the body that read message from the brain
- 11. The other system that works in tandem with the Respiratory system
- 14. Muscles located in the upper arm
- 16. Carries blood away from the heart
- 17. The heart muscle that allows the heart to contract and relax which pumps blood
- 18. What circulates through your veins and keeps your cells functioning
- 19. Where air ends up
Down
- 1. Carries blood back to to the heart
- 2. An element that makes bones stronger and healthier
- 4. Tissue that connects bones to other bones
- 6. What muscles do that make the bones be able to move
- 8. Muscles located in the stomach that work in the digestive system
- 9. The type of blood cell that the bones produce
- 12. Expands and retracts to make your chest go up and down
- 13. Two bottom chambers of the heart
- 15. Tiny cells that control the brain