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Responds to stimulus (change in external/internal environment); Distal end of dendrites, sensory structure; Initiate impulse via local depolarization (graded potential)

Sensory neuron

Receptor to axon termination in CNS; Transmits afferent impulse

Integration center

Sensory impulse to motor impulse; Direct (monosynaptic) or polysynaptic region in CNS

Motor neuron

Efferent impulses from integration center to effector


muscles and glands

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Voice Recording