Neurons and Cranial Nerves (simple question)

I'm been reading The Idiot's Guide to Understanding the Brain thinking it would be a nice introduction to the subject. Well, just like the other idiots guide I read, it is plagued with problems (not enough diagrams, repeating whole paragraphs, vagueness, etc.).But I digress. I just have one simple question: are cranial nerves actually bundles of nerves and not just a nerve (singular)? It doesn't say this explicitly but I believe that has to be the case since they are conveying so much information (optic, auditory, etc).I know this is a weak topic, but I swear to you I've googled this and I couldn't figure out the correct answer and clarification would be greatly appreciated.Thanks. Edited by JustinC, : typo

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