The ions pumped out of the neuron to create a resting phase.
Answer to Problem 9RQ
Sodium ions are pumped out of the neuron in resting phase.
Explanation of Solution
The ions which are pumped out by the nerve cells are sodium ion. The sodium ions play anessential role in the generation of the nerve impulses as the difference in the concentration of the sodium inside and outside the nerve cells creates a potential difference. The potential difference thus developed is responsible for the generation of the nerve impulse. During resting phase of the nerve impulse, sodium ions get released from the neurons and a potential difference of around is generated. In the impulse phase, the sodium ions are pumped inside the nerve cells completing a full nerve impulse cycle.
Conclusion:
Therefore, Sodium ions are pumped out of the neuron in resting phase.
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