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Patience Phiri
Mar 1

Explain how an impulse is transmitted a Long the nerve?

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ChatGPT
Mar 1
An impulse is transmitted along a nerve through a process called action potential.

When a nerve cell is at rest, it maintains a negative charge inside the cell compared to the outside. This is due to the distribution of ions across the cell membrane. When a stimulus is received by the nerve cell, it causes a change in the distribution of ions, leading to a depolarization of the cell membrane. This depolarization triggers the opening of voltage-gated ion channels, allowing sodium ions to rush into the cell, further depolarizing the membrane.

This rapid change in membrane potential creates an action potential, which is a brief electrical signal that travels along the nerve cell. The action potential travels down the length of the nerve cell, causing a wave of depolarization and repolarization along the cell membrane. This wave of depolarization and repolarization allows the action potential to propagate along the length of the nerve cell.

At the end of the nerve cell, the action potential triggers the release of neurotransmitters into the synapse, which then bind to receptors on the next nerve cell, continuing the transmission of the impulse along the nerve pathway.
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