Across
- 2. Disk-shaped structures that help your blood to clot.
- 3. A tube of neurons that runs up the spine.
- 4. Tubes that carry blood
- 6. Cells that carry oxygen and some wastes to the body.
- 7. The brain and spinal cord.
- 8. Tubes that carry blood to the heart.
- 11. Cells that help destroy disease causing germs.
- 14. The nerves that branch out from the CNS
- 15. Cells that make up the nervous system
- 16. Tubes that carry blood away from the heart.
Down
- 1. Transferring blood form one person to another.
- 5. The control and communication system of the body.
- 9. System Allows the body to move blood to and from tissues
- 10. The muscle that acts as the pump for the circulatory system.
- 12. The command center
- 13. Tiny blood vessels that connect the arteries to the veins. They deliver oxygen and nutrients to the cells.