Across
- 2. thin weblike membrane middle layer
- 4. portion of a neuron that receives signals
- 7. two large masses called l and r hemispheres
- 8. used as an insulator
- 9. portion of a neuron that sends signals
- 10. nervous system under conscious control
- 12. rapid change in the membrane potential
- 17. cells that form an epidermal like membrane
- 18. nervous system that is involuntary
- 21. type of neuron with only one process
- 22. interconnected cavities of the brain
- 26. signals that go to an organ, gland, muscle
- 27. type of neuron with many processes n cell body
- 28. narrow gaps between schwann cells
- 29. type of potential that must be reached first
- 32. cell that produces the myelin sheath around axons
- 34. signal that keeps threshold attainment low
- 35. ridges on the brain
- 36. layered membranes
Down
- 1. deep grooves on the brain
- 3. simplest pathway with only a few neurons
- 4. outermost layer of a mininge
- 5. innermost membrane of a mininge
- 6. slender nerve column that connects to brain
- 11. shallow grooves found on the brain
- 13. signal that will reach th and trigger signal
- 14. chemical allowing crossing of synapse
- 15. type of neuron also called afferent
- 16. cells that align along axons
- 19. acrimym for cerebrospinal fluid
- 20. type of neuron with 2 processes
- 23. also called nerve cells
- 24. commonly found between neurons/blood vessels
- 25. supporting tissue of the nervous system
- 30. specialized masses of nerve tissue
- 31. type of neuron also called efferent
- 33. cells that are scattered throughout the body