Neural Control and Coordination Question 15

15. When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is:

[2011]

(a) comparatively more permeable to $Na^{+}$ ions and nearly impermeable to $K^{+}$ions

(b) equally permeable to both $Na^{+}$and $K^{+}$ ions

(c) impermeable to both $Na^{+}$and $K^{+}$ions

(d) comparatively more permeable to $K^{+}$ions and nearly impermeable to $Na^{+}$ions

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Answer : d

Hints & Solutions

(d) When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is comparatively more permeable to $K+$ ion and nearly impermeable to $Na+$ ions.