Parasympathetic Preganglionic Neurons Travel in What Nerves

Question

Parasympathetic preganglionic neurons travel in what nerves?
A) spinal nerves only
B) pelvic nerves only
C) cranial nerves only
D) cranial and spinal nerves
E) cranial and pelvic nerves

Accepted Answer

Parasympathetic preganglionic neurons travel in both cranial and pelvic nerves. Cranial nerves involved include the oculomotor nerve (III), the facial nerve (VII), the glossopharyngeal nerve (IX), and the vagus nerve (X). Pelvic nerves refer to the sacral part of the spinal cord (S2-S4), which gives rise to the pelvic splanchnic nerves that innervate the lower half of the body.