A benign tumour in the pterygoid canal would spare which of the following nerve fibers
Postganglionic parasympathetic fibers The nerve of the pterygoid canal (Vidian nerve), formed by the junction of the great (superficial)petrosal 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 secretomotor(parasympathetic) fibers towards the pterygopalatine ganglion Deep petrosal nerve carries the postganglionic sympathetic fibers from T1 spinal segment (superior cervical ganglion)
Postganglionic parasympathetic fibers
Taste fibers from the palate
Postganglionic sympathetic fibers
General visceral afferent (GVA) fibers