impulse travels rapidly in which neurons?
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Explanation:
Because the impulse 'jumps' over areas of myelin, an impulse travels much faster along a myelinated neuron than along a non-myelinated neuron. Velocity of nerve impulses not only depends on myelination but also on the thickness of the nerve fibres.
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An electrical nerve impulse travels along the first axon. When the nerve impulse reaches the dendrites at the end of the axon, chemical messengers called neurotransmitters are released. These chemicals diffuse across the synapse (the gap between the two neurons)
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