Across
- 2. The inner framework made up of all the bones of the body
- 6. A complex molecule containing the genetic information that makes up the chromosomes.
- 8. the natural outer layer that covers a person, animal etc.
- 10. A hollow, muscular organ that pumps blood throughout the body.
- 12. the line of bones down the centre of the back that provides support for the body and protects the spinal cord
- 13. the body's speedy, electrochemical communication network
- 14. a large organ in the body that cleans the blood and produces bile
- 15. The basic unit of structure and function in living things
Down
- 1. Blood vessel carrying blood towards the heart
- 3. organ that removes urea, excess water, and other waste products from the blood and passes them to the ureter
- 4. Dense, hard connective tissue composing the skeleton
- 5. The mass of nerve tissue that is the main control center of the nervous system
- 7. tissue composed of fibers that can contract, causing movement of an organ or part of the body
- 8. large muscular sac that continues the mechanical and chemical digestion of food
- 9. A segment of DNA on a chromosome that codes for a specific trait
- 11. A thick and wide blood vessel that carries blood away from the heart
- 16. An organ found in air-breathing vertebrates that exchanges oxygen and carbon dioxide with the blood
