"Any of the cordlike bundles of fibers made up of neurons through which sensory stimuli and motor impulses pass between the brain or other parts of ...From:http://www.thefreedictionary.com/nerve Sympathetic trunk - Wikipedia, the free encyclopediaThe sympathetic trunks (sympathetic chain, gangliated cord) are a paired bundle of nerve fibers that run from the base of the skull to the coccyx.From:htt" . . . .