Across
- 3. an automatic, involuntary response to stimulus.
- 5. the tiny microscopic gap between the axon of one neuron and the dendrite of the next, where cell to cell communication occurs.
- 6. three tough layers of protective membrane that surrounds and protect the brain and spinal cord.
- 7. an insulating, fatty layer that wraps around many axons, speeding up the transmission of electrical impulses
- 8. largest part of the brain
- 9. nerves that carry impulses from the brain to the muscles and glands
- 12. basic structural and functional unit of the nervous system
- 13. nerves that carry impulses from the body/senses to the brain
Down
- 1. branch-like fibers that receives impulses
- 2. long fiber that carries impulses away from the cell body
- 4. column of nerve tissue that extends from the brain down the back
- 5. the part of the PNS that controls involuntary actions
- 8. a region of the brain located at the back of the skull that primarily coordinates voluntary movements,posture, and balance
- 10. the brain and spinal cord
- 11. the division of the automatic nervous system that drives the "rest ad digest" response, helping the body conserve energy and relax.