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Types of neurons.

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(a) The vertebrate sensory neurons are afferent neurons with an axon that bypasses the cell body and projects to the CNS. (b) Motor neurons are efferent neurons that leave the CNS and usually have long axons that enable them to act on distant cells. (c) Interneurons are usually short neurons that connect two or more other neurons within the CNS. Although short, the axons and dendrites may have extensive branches, allowing them to receive many inputs and transmit signals to many neurons.
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