Resting membrane potential is maintained by

Question

Resting membrane potential is maintained by, hormones, neurotransmitters, ion pumps, none of the above

MARKS App · Accepted Answer

During the resting-state of the neuron:

- The high concentration of K+ and negatively charged proteins and low concentration of

{N a}^{+}

in axoplasm.

- In contrast, the fluid outside the axon contains a low concentration of

K^{+}

, a high concentration of

{N a}^{+,}

and thus forms a concentration gradient.

- These ionic gradients across the resting membrane are maintained by the Na-K pump which actively transports

3 {N a}^{+}

outwards for

2 K^{+}

into the cell.

- The membrane is polarised.

- Potential difference is termed as resting potential.

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