Across
- 2. Chemical substances produced by glands that affect many body processes.
- 4. Process by which nutrients move from the digestive system into the bloodstream.
- 5. System that moves gases throughout the body.
- 8. The least complex level of organization of the human body
- 11. A signal that creates a response
- 12. Another name for the circulatory system.
- 15. System that produces movement.
- 16. Chemical substances needed by body cells that result from the process of digestion.
- 17. A group of similar cells performing the same function
- 20. Skin and kidneys are examples of these
- 21. System that controls the body's responses to the environment.
- 22. The muscles attached to bones that provide the force to move the bones
- 23. Reaction to a stimulus.
Down
- 1. The elbow and shoulder are types of these.
- 3. The skin is made of this tissue
- 6. This system removes waste products from the body
- 7. System that releases chemical signals.
- 9. A tissue that has the ability to contract
- 10. The control center of a cell
- 13. Tissue that connects all of the body’s parts.
- 14. Release hormones into the bloodstream.
- 18. System that supports the body and protects internal organs.
- 19. The circulatory system works with the ___________ system to get nutrients to all body cells.
- 20. Each organ in the body is part of a(n) _____________ performing a major function.