The Nervous System
Across
- 2. gathers information and monitors changes
- 4. contains vesicles with neurotransmitters
- 5. abbreviation for the part of the nervous system that includes all nerves outside of the brain and spinal cord
- 7. division that stimulates the rest and digest response
- 10. create the myelin sheath around the CNS neurons
- 12. disease that occurs when the body starts to kill all of the oligodendrocytes
- 15. occurs when potassium flowing out of the cell reestablishes the electrical conditions within the cell
- 16. occurs when sodium enters the cell after being stimulated by a neurotransmitter
- 17. effects a response
- 18. part of the PNS that carries impulses to the effector organs
- 19. fatty substance that wraps around the axon
- 20. part of the PNS and conveys impulses to to the CNS
- 22. effector organs for the motor division include muscles and ______________
- 23. there is a higher concentration of sodium ________________ the neuron
- 24. body system that has the same function as the nervous system
- 25. part of the PNS motor division that communicates to the skeletal system
- 28. the gap between adjacent neurons
- 30. supporting cell of the CNS that nourishes the neurons
- 31. the resting charge on the inside of the neuron
- 32. abbreviation for the part of the nervous system that includes the brain and spinal cord
Down
- 1. the part of the axon in between the myelin sheath links
- 3. means that there are fewer positive ions inside the cell than outside the cell
- 6. junction between neurons
- 8. will communicate with the heart, digestive system, and endocrine glands
- 9. conducts impulses away from the cell body
- 11. processes and interprets the input and makes sense of the decisions
- 13. protective cells of the PNS
- 14. conduct impulses toward the cell body
- 17. garbage men of the CNS
- 21. part of the neuron that contains the usual organelles and nucleus
- 26. the somatic division is under __________________ control
- 27. PNS cells that serve the same function as oligodendrocytes
- 28. division that stimulates the fight or flight response
- 29. fibers that extend from the cell body