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The concept of transgenders has nothing to do with sexual organs at birth. Transgenders is a concept that has to do with sociology, not biology. See the wiki link. Hermaphroditism (sometimes called intersex) has to do with biology. The wiki link makes a great job at defining intersex. In short: A transgender person is born anatomically either male or ...


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You are looking for the Trigeminal nerve, the largest nerve in the face. Here it is with its branches. It is both afferent and efferent. Afferent and efferent components of the facial nerve in the bullfrog (Rana catesbeiana) Cranial Nerves Illustrated: Figure V-4 General sensory component of the trigeminal nerve, ophthalmic (V1) division. General ...


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Reverse signals (dendrite -> axon) do occur in neurons, and are called back propagating action potentials (bAPs). However, whatever role bAPs play in the nervous system at large is subtle/small enough that we don't really understand them at all. In any case, as @luigi points out, pinched nerves don't have anything to do with bAPs. The reason why a pinch in ...



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