special visceral efferent nuclei -->
branchiomotor nuclei
medical dictionary

Collective term for those motoneuronal nuclei of the brainstem (n. Ambiguus, facial motor nucleus, motor nucleus of the trigeminus) that develop from the branchiomotor column of the embryo and innervate striated muscle fibres (muscles of mastication, facial musculature, pharynx and vocal cord muscles) developed from the mesenchyme of the branchial arches.

Synonyms: special visceral efferent nuclei, special visceral motor nuclei.

(05 Mar 2000)