<prompt> Which cranial nerve carries parasympathetic fibers?Vagus nerveTrigeminal nerveHypoglossal nerveAbducent nerve  <response>: Ans. A. Vagus nerveThe only cranial nerves that transmit parasympathetic fibers are the oculomotor, facial, glossopharyngeal, and vagus nerves.Parasympathetic flow is cranio-sacral flow carried by cranial nerves: 3,7,9,10 and the sacral nerves: S-2,3,4. These nerves carry the preganglionic fibres to their respective ganglia. 