Respuesta :
K+ ions are more abundant in the interior of resting neuron that in the fluid surrounding the neuron.
An active pump can keep the larger concentration of Na+ outside the neuron because there is resistance to the passage of Na+ through the neuronal membrane. At rest, K+ concentrations are higher inside the neuron.
Which ions are more abundant outside of a resting cell?
The sodium ion concentration inside the cell is low, whereas the sodium ion concentration outside the cell is higher.
What ion contributes the most to the resting potential of neurons?
Potassium is the main ion responsible for determining the resting membrane potential. In skeletal muscle, potassium conductance makes up around 20% of the resting membrane conductance, and it makes up the majority of the resting conductance in neurons and nerve fibers.
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