You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A benign tumour in the pterygoid canal would spare which of the following nerve fibers and explain in detail?
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)