"cranial nerve." YourDictionary, n.d. Web. 12 October 2018. <http://www.yourdictionary.com/cranial-nerve>.
cranial nerve. (n.d.). Retrieved October 12th, 2018, from http://www.yourdictionary.com/cranial-nerve
Any of several nerves that arise in pairs from the brainstem and reach the periphery through openings in the skull. There are 12 such pairs in mammals, birds, and reptiles and usually 10 pairs in amphibians and fish.