facial motor nucleus

(redirected from Facial nerve nucleus)

fa·cial nu·cle·us

a group of motor neurons located in the anterolateral region of the lower pontine tegmentum and innervating the muscles of facial expression, the stapedius muscle in the middle ear, the posterior belly of the musculus digastricus, and the stylohyoid muscle.

facial motor nucleus

A nucleus of the branchial motor column in the pontine region of the hindbrain. This nucleus is a column of cholinergic neurons in the ventrolateral tegmentum. It is the origin of motor axons in the facial nerve (CN VII), which innervate the muscles of facial expression.
See also: nucleus
References in periodicals archive ?
The facial nerve nucleus can be activated in following two ways:
When the organism is emotionally aroused there is activity in the hypothalamus and the limbic system in the lower brain, which influences the facial nerve nucleus via the extrapyramidal tract.
Impulses originate in the motor cortex, going directly to the brain stem and the facial nerve nucleus, via the pyramidal tract.