MCQ
The nerve fibre in its resting stage is
- ✓More permeable to $K^{* i i}$
- BSemi-permeable to $K^{+i i}$
- CLess permeable to $K^{* i i}$
- DAll of these
✓
Answer
Correct option: A.
More permeable to $K^{* i i}$
a
In resting nerve fibre (a nerve fibre that is not conducting an impulse), sodium ions ( $N a^{* i i}$ ) predominate in the extra cellular fluid, whereas potassium ions $\left(K^{* i i}\right)$ predominate in the intracellular fluid (within the fibre). This result in the fact that, the resting membrane has only a poor permeability for $N a^{* i i}$ although it has a higher permeability for $K^{* i i}$.
In resting nerve fibre (a nerve fibre that is not conducting an impulse), sodium ions ( $N a^{* i i}$ ) predominate in the extra cellular fluid, whereas potassium ions $\left(K^{* i i}\right)$ predominate in the intracellular fluid (within the fibre). This result in the fact that, the resting membrane has only a poor permeability for $N a^{* i i}$ although it has a higher permeability for $K^{* i i}$.
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