Which statement about the autonomic nervous system is true?
A) The sympathetic division is afferent, and the parasympathetic division is efferent.
B) The transmitter norepinephrine is always excitatory, and acetylcholine is always inhibitory.
C) Each pathway in the autonomic nervous system includes two neurons, and the neurotransmitter of the first neuron is acetylcholine.
D) The cell bodies of many sympathetic preganglionic neurons are in the brainstem.
E) The cell bodies of most parasympathetic postganglionic neurons are in or near the thoracic and lumbar spinal cord.

Question

Quizplus · Accepted Answer

Each pathway in the autonomic nervous system includes two neurons, and the neurotransmitter of the first neuron is acetylcholine. The second neuron, which lies outside the central nervous system, releases either acetylcholine or norepinephrine.

(Note: A, B, D, and E are all incorrect statements about the autonomic nervous system.)

Which Statement About the Autonomic Nervous System Is True