neuron projection bundle axon tract NLX:147822 EV:0100304 FMA:83847 axonal tract FBbt:00005100 BIRNLEX:1649 neuraxis tract tract White matter structure of CNS that contains axons that arise predominantly in one central nervous system part and terminate in another. Tracts are generally named by their region or origin followed by their region of primary termination, e.g., mammillothalamic tract contains axons that arise from neurons in the mammillary bodies and terminate in the thalamus. (CUMBO) nerve tract nerve tract A group of axons linking two or more neuropils and having a common origin, termination[FBbt]. uberon WP says this is the analog of peripheral nerves in CNS. tract of neuraxis UBERON:0001018 central nervous system cell part cluster