Which fiber type synapses in the ciliary ganglion?

• A Preganglionic sympathetic fibers from the superior cervical ganglion
• B Postganglionic parasympathetic fibers from the pterygopalatine ganglion
• C Preganglionic parasympathetic fibers from the Edinger-Westphal nucleus ✓
• D General visceral afferent fibers from the nasociliary nerve

Explanation

The ciliary ganglion is a parasympathetic ganglion. Only preganglionic parasympathetic fibers originating from the Edinger-Westphal nucleus synapse here. Sympathetic fibers from the superior cervical ganglion and sensory fibers from the nasociliary nerve pass through the ganglion without synapsing. Postganglionic fibers from the pterygopalatine ganglion travel to the lacrimal gland, whereas the ciliary ganglion supplies the ciliary muscle and pupillary sphincter.

Reference: Gray's Anatomy for Students, 4th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.