How Are Nerve Impulses Transmitted?


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Fred Hamill answered
Impulses are transmitted using neurotransmitters, which are specialized chemicals that released from one nerve cell to another.

In more detail about the mechanism of transmission...

The nervous system functions by conducting an electrical signal or impulse along the length of the nerve and transmitting it across a junction (called the synaptic cleft) to another nerve or to a muscle fiber. When a nerve impulse reaches the terminus of the nerve, an influx of ions promotes the release of vesicles containing a neurotransmitter such as acetylcholine, allowing this messenger molecule to diffuse across the synaptic cleft and bind to specific receptors.

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