Card 18 / 30: The resting conductance of an ordinary neuron is due to a K+ channel that is always open at the resting potential. If you double the extracellular K+ concentration, from 5 to 10 mM, what happens to the membrane time constant?
A)
nearly doubles
B)
increases slightly
C)
no effect on time constant
D)
decreases slightly
E)
nearly halves
Answer:
E) nearly halves
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