Across
- 2. hollow spaces that connect with each other
- 7. mass of nerve tissue well protected by membranes and the cranium
- 8. Basic structural unit of the nervous system
- 10. areas where cranial bones have joined together
- 12. combination of many nerve fibers
- 13. collarbones
- 15. three membranes that cover and protect the brain and spinal cord
- 16. wrist
- 17. shoulder bones
Down
- 1. protect spinal cord
- 3. soft spots
- 4. the openings in bones that allow nerves and blood vessels to enter or leave the bone
- 5. regulates and controls the autonomic nervous system
- 6. section located below the midbrain and in the brainstem
- 9. upper arm
- 11. Largest and highest section of the brain
- 14. acts as a relay center
- 18. air spaces in the bones of the skull