Ciliary Ganglion Sphincter Pupillae — FRCA Primary MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: A — The sphincter pupillae (constriction) and the ciliary muscle (accommodation)
The ciliary ganglion lies lateral to the optic nerve in the posterior orbit. It receives preganglionic parasympathetic fibres from the Edinger-Westphal nucleus via the inferior division of CN III. Postganglionic fibres travel in the short ciliary nerves to supply: sphincter pupillae (miosis) and ciliary muscle (accommodation for near vision).
Reference: RCoA 2021 Primary FRCA Curriculum