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neurotransmitters
neuroglia, transmitters and stuff
| Question | Answer |
|---|---|
| create myelin sheaths in CNS | oligodendrocytes |
| create myelin sheaths in PNS | schwann cells |
| destroy pathogens | microglia |
| holds neurons in place and act as intermediary between capillaries and neurons | astrocytes |
| membrane potential the inside of the cell is mostly | negative |
| membrane potential the outside of the cell is mostly | positive |
| normally found in higher concentration outside the cell | NA+ |
| normally found in higher concentrations inside the cell | K+ |
| if sodium channels open sodium will flow in causing | depolarization |
| if potassium channels open, potassium will leave the cell causing | hyperpolarization |
| resting membrane potential of a neuron | -70mV |
| if a neuron is depolarized to -55mV | an action potential will occur |
| non myelinated areas of the CNS appear as | grey matter |
| myelinated areas appear as | white matter |