Where in the central nervous system do the preganglionic neurons of the parasympathetic nervous system originate?
A) sacral region of the spinal cord only
B) lumbar region of the spinal cord only
C) thoracic and lumbar regions of the spinal cord
D) brainstem and sacral region of the spinal cord
E) thoracic region of the spinal cord only

Question

Quizplus · Accepted Answer

The parasympathetic nervous system's preganglionic neurons originate in the brainstem and the sacral region of the spinal cord, not in the thoracic or lumbar regions. This is often summarized as the "craniosacral" origin of the parasympathetic nervous system.

Where in the Central Nervous System Do the Preganglionic Neurons