Across
- 3. These are the levels from cell to organism.
- 5. What is the function of the muscular system?
- 6. What attaches bone to muscle?
- 9. This is a function of the skeletal system.
- 13. This type of muscle is found only in the heart.
- 14. What is the name for internal stability in the body?
- 17. These vessels carry blood away from the heart.
- 18. Where does air enter your respiratory system?
- 19. There are 650 of these in the body.
Down
- 1. What is the main organ of the skeletal system?
- 2. What is the main function of the circulatory system?
- 4. This type of muscle is automatic.
- 7. What organelle performs cellular respiration?
- 8. What is the smallest unit of life?
- 10. There are three types of these in the circulatory system.
- 11. These attach bone to bone.
- 12. What organ is the pump for the circulatory system?
- 15. The lungs, heart, bones, and blood vessels are all examples of this.
- 16. This is brought into the body by the respiratory system.
- 20. What are the main organs of the respiratory system?