Human Body Systems
Across
- 4. The maintenance of a constant internal state in a changing environment
- 6. Type of involuntary muscle found in the heart
- 8. The system that breaks down food so that it can be used by the body
- 10. A blood vessel that carries blood away from the heart to the body's organs
- 12. The system that supports the body and provides protection
- 13. A collection of tissues that carry out a specialized function of the body
- 14. The system that allows movement of body parts
- 15. The system that protects the body against infection
- 18. The system that rids the body of waste and excess water
- 20. The fluid that carries gases, nutrients, and waste throughout the body
- 22. Type of involuntary muscle found in internal organs such as the intestines
Down
- 1. The system that takes in oxygen and expels carbon dioxide
- 2. The system that moves blood through the body
- 3. The primary organ of the cardiovascular system
- 5. A tiny blood vessel that allows an exchange between blood and cells in tissue
- 7. Connects muscle to bone
- 9. Holds together the bones in a joint
- 11. A group of similar cells that perform a common function
- 12. A group of organs that interact in the body
- 16. A blood vessel that carries blood to the heart
- 17. The system that controls the actions and reactions of the body
- 19. The smallest unit that can perform life processes
- 21. A place where two or more bones meet