A) Comparatively more permeable to \[N{{a}^{+}}\] ions and nearly impermeable of \[{{K}^{+}}\] ions
B) Equally permeable to both \[N{{a}^{+}}\] and \[{{K}^{+}}\] ions
C) Impermeable to both \[N{{a}^{+}}\]and \[{{K}^{+}}\]ions
D) Comparatively more permeable to \[{{K}^{+}}\] ions and nearly impermeable to \[N{{a}^{+}}\]ions
Correct Answer: D
Solution :
Different types of ion channels are present on the neural membrane. These ion channels are selectively permeable to different ions. When a neuron is not conducting any impulse, i.e., resting, the axonal membrane is comparatively more permeable to potassium ions \[\left( {{K}_{+}} \right)\]and nearly impermeable to sodium ions \[\left( N{{a}_{+}} \right).\]
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