Across
- 1. Body system that transports oxygen and nutrients to the body and removes CO2 and other waste products
- 5. Groups of similar cells performing the same function
- 6. A group of organs that work together to perform a specific function
- 8. Body system that produces eggs or sperm and nourishes offspring until birth
- 9. Body system that acts as a barrier to protect the body from the outside world
- 11. Body system that contains glands that secrete hormones to regulate metabolism, grown, sleep, and reproduction
- 15. Body system that breaks down food into tiny molecules to allow the body to absorb the nutrients
- 16. How the organism reacts to a stimulus and results in a change in behavior
- 18. Body system that provides support, movement, protection, blood cell production, and calcium storage
- 19. A group of tissues that work together to perform a specific function
Down
- 2. Body system that supplies blood with oxygen in order for the blood to deliver oxygen to all parts of the body
- 3. Body system that is responsible for the movement of the human body
- 4. The maintenance of a stable internal environment
- 7. Any change in an organism's environment that causes the organism to react
- 10. Body system that collects and transports a clear, colorless fluid containing white blood cells that helps rid the body of toxins and waste
- 12. A living individual that can reproduce, grow, and maintain homeostasis
- 13. Body system that controls and transmits signals between different parts of the body
- 14. The most basic unit of structure and function of all living things
- 17. Body system that removes wastes that can cause toxic build up and lead to diseases or death