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(B) Nerve signals in animals are primarily generated by the electrical potential difference across the cell membrane.This potential difference is main

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Due to the electrical potential difference generated by the movement of $Na^{+}$ ions in the $(Na^{+}-K^{+})$ pump.

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(B) Nerve signals in animals are primarily generated by the electrical potential difference across the cell membrane.This potential difference is maintained by the $(Na^{+}-K^{+})$ pump,which actively transports $Na^{+}$ ions out of the cell and $K^{+}$ ions into the cell.The resting membrane potential is largely established by the concentration gradient of $K^{+}$ ions,and the rapid movement of $Na^{+}$ ions across the membrane during an action potential is responsible for the transmission of nerve signals.

In animals,nerve signals are generated due to which of the following?

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