"Whilst not mentioned in anatomy textbooks by Last or Gray, the nervus terminalis carries plays a role in the development of the hypothalamic-pituitary-gonadal axis during embryogenesis, as a migration route for luteinizing hormone-releasing hormone cells 5. As such, it is probably implicated in pathogenesis of Kallman syndrome 5."
"The nervus terminalis (NT), also referred to as cranial nerve zero, cranial nerve XIII, zero nerve, or nerve N, is a previously unnumbered cranial nerve, the most rostral of all cranial nerves."
"It is a bilateral bundle of nerve fibres, which runs in the subarachnoid space from the medial olfactory stria on the inferior surface of the frontal lobe, to and through the cribriform plate, to the nasal septum. It runs medially to the olfactory nerve, over the surface of the gyrus rectus."
"The terminal nerve originates from the neural crest, distinct and separate from the olfactory nerve (which originates in the nasal placode)."