nuclei of origin

nu·cle·i of or·i·gin

collections of motor neurons (forming a continuous column in the spinal cord, discontinuous in the medulla and pons) giving origin to the spinal and cranial motor nerves.
Synonym(s): nucleus originis [TA], motor nuclei

nu·cle·i of or·i·gin

(nū'klē-ī ōr'i-jin)
Collections of motor neurons (forming a continuous column in the spinal cord, discontinuous in the medulla and pons) giving origin to the spinal and cranial motor nerves.
References in periodicals archive ?
This article reviews the anatomy of these cranial nerves, highlighting potential causes of damage between their nuclei of origin in the brainstem and termination on the extraocular muscles (EOMs), and so aims to provide a basis for informed diagnosis of ocular motor palsies in their various forms.