Across
- 5. Responsible for pumping blood around the body
- 8. An Organism that causes disease
- 9. The organelle where proteins are manufactured
- 10. The brain and spinal chord are made up of this nervous system
Down
- 1. Part of the brain where the spinal chord enters the skull
- 2. A substance that kills bacteria or prevents the growth of bacteria
- 3. Chemical substances that act as messengers in the body
- 4. All the chemical reactions occurring in the cells
- 6. the system in your body that fights infections
- 7. the movement of particles of a substance from an area of high concentration to an area of low concentration