The trigeminal nerve is a cranial nerve. It arises from the brainstem, and its branches cover your face and head. The trigeminal nerve is a paired nerve — you have one on each side. Its chief function ...

Your sense of smell comes from the olfactory nerve, the first cranial nerve. Multiple sensory nerve fibers make up the olfactory nerve. This nerve plays a vital role in using your senses to enjoy your ...

THE origin of vertebrate animals is to be found according to many morphologists in those invertebrates which are composed of a series of segments, and one of the chief arguments in favour of this view ...