Across
- 3. blood vessels that carry blood
- 5. The organs that take in food and liquids and break them down
- 6. The framework that supports the soft tissues of vertebrate animals and protects many of their internal organs
- 7. The smallest type of blood vessel
- 9. A group or layer of cells that work together to perform a specific function
- 10. tissue that makes and releases hormones
- 13. A state of balance among all the body systems
- 14. An organ that makes one or more substances
- 15. The adaption of form or behavior of an organism to changed conditions
- 18. metabolic process wherein, the living cells of an organism obtains energy
- 19. A state of balance among all the body systems
Down
- 1. chemical substances that act like messenger molecules in the body
- 2. A blood vessel that carries blood to the heart
- 4. The process of breaking down food
- 7. The system that contains the heart and the blood vessels
- 8. an organ system responsible for providing strength
- 11. The tissues, glands, and organs involved in producing offspring (children)
- 12. tissue made of long threadlike cells
- 16. the process by which organisms expels metabolic waste
- 17. organized group of cells, called neurons