start stage end stage cranial nerve terminal nerve nervus terminalis TAO:0001356 The terminal nerve, located anterior to cranial nerve I, is comprised of a group of cells with somata adjacent to the olfactory bulb and processes that extend anteriorly to the olfactory epithelium and posteriorly to the telencephalon. In teleost fish an additional group of axons extends along the optic tract and delivers putative neuromodulators to the retina. It is thought to develop from cranial neural crest. zebrafish_anatomy ZFA:0001356 pharyngula:prim-5 adult