Nervous system

3. type of neuroglia that supports neurons
5. membrane is less permeable to this ion
7. long fibers, nerve ends releases neurotransmitters
10. state in which the resting potential is reversed
12. bundle of axons in the PNS
13. refractory period in which sodium channels return to their original state and some potassium are still open
15. refractory period from sodium channels open until they return to their natural state
16. sodium channels inactivate, potassium channels open
18. subdivision of the PNS activated as a 'fight or flight' response
19. positive intracellular ion in resting state
20. gated channels closed, voltage -70mV

1. Conducts local currents toward the soma
2. motor division that regulate activity of involuntary muscles
4. motor division that conducts impulses from the CNS to skeletal muscles (voluntary)
6. sodium channels reset
8. Junction of close contact between neurons
9. a resting neuron on the inside is
11. bundle of axons in the CNS
14. the membrane is less permeable to this ion
17. true or false, a charge separation exists at the membrane
18. where organelles are found