Autonomic effectors require two efferent neurons.

Name: Autonomic effectors require two efferent neurons.
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Autonomic effectors, such as smooth muscle, cardiac muscle, and glands, require two efferent neurons in their pathway. The first, preganglionic neuron originates in the brain or spinal cord and synapses with the second, postganglionic neuron located in an autonomic ganglion. The postganglionic neuron then innervates the effector organ.

Autonomic Effectors Require Two Efferent Neurons