<prompt> A benign tumour in the pterygoid canal would spare which of the following nerve fibersPostganglionic parasympathetic fibersTaste fibers from the palatePostganglionic sympathetic fibersGeneral visceral afferent GVA fibers  <response>: Postganglionic parasympathetic fibers The nerve of the pterygoid canal Vidian nerve, formed by the junction of the great superficialpetrosal nerve and the deep petrosal nerve in the cailaginous substance which fills the foramen lacerum, passes forward, through the pterygoid canal, and joins the pterygopalatine ganglion. Greater petrosal nerve carries taste fibers from palate as well as preganglionic secretomotorparasympathetic fibers towards the pterygopalatine ganglion Deep petrosal nerve carries the postganglionic sympathetic fibers from T1 spinal segment superior cervical ganglion 