Nervous System

4. the location of synaptic knobs on a neuron
6. a group of nerve cell bodies in the peripheral nervous system
7. the outer connective tissue covering of an entire nerve
8. the connective tissue covering of a neuron
12. the extended fiber of a neuron that transmits an axon potential from the axon hillock
13. a change in membrane potential that causes a depolarization on a postsynaptic neuron
17. an autosomal recessive genetic disorder in which fatty material builds up in neurons of the CNS
20. any chemical messenger secreted from the axon terminus of a neuron
22. the insulating cover around a neuron
23. conduction the apparent jumping of an action potential along successive nodes of on an axon
25. an autoimmune disorder in which the myelin in the central nervous system is destroyed
26. a cell that makes the myelin sheath in the peripheral nervous system

1. a cell of the CNS that generates cerebrospinal fluid
2. the connective tissue covering of a nerve fascicle
3. a change in membrane potential that causes a hyperpolarization on a postsynaptic neuron
5. a cell that makes the myelin sheath in the central nervous system
9. loss of muscle mass due to lack of nervous stimulation
10. an organ composed of clusters of neurons that transmit nerve information
11. the space between one neuron and the next in a nervous pathway
14. the non-neuron supporting cells of the nervous system
15. hillock the cone-shaped segment of a neuron where the axon originates
16. macrophages of the CNS
18. a branch or extension of a nerve cell body that receives nervous signals
19. cell that transfers materials between neurons and blood and creates the blood-brain barrier
21. the plasma membrane surrounding the axon of a neuron
24. the major cell of the nervous system