branchiomotor nuclei(redirected from special visceral efferent nuclei)
collective term for those motoneuronal nuclei of the brainstem (n. ambiguus, facial motor nucleus, and motor nucleus of the trigeminus) that develop from the branchiomotor column of the embryo and innervate striated muscle fibers (muscles of mastication, facial musculature, pharynx, and vocal cord muscles) associated with the branchial arches. (The term pharyngeal arch is commonly used in humans because gills do not appear during development in this species.)
Farlex Partner Medical Dictionary © Farlex 2012
bran·chi·o·mo·tor nu·cle·i(brang'kē-ō-mō'tŏr nū'klē-ī)
Collective term for those motoneuronal nuclei of the brainstem that develop from the branchiomotor column of the embryo and innervate striated muscle fibers.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012