marginal mandibular branch of facial nerve

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mar·gi·nal man·dib·u·lar branch of fa·cial nerve

[TA]
branch of parotid plexus of facial nerve that parallels the mandibular margin innervating the risorius muscle and muscles of lower lip and chin.
References in periodicals archive ?
The deformity produced by palsy of the marginal mandibular branch of the facial nerve.
Anatomy of the marginal mandibular branch of the facial nerve.
Anatomical localisation of the marginal mandibular branch of the facial nerve.
1) The marginal mandibular branch of the facial nerve passes forward beneath the platysma and triangularis muscles.
The technical aspects of the surgery are important, particularly the preservation of the marginal mandibular branch of the facial nerve.
The transcervical approach also places the marginal mandibular branch of the facial nerve at risk of transection, which may result in postoperative lip weakness, but this risk can be minimized by careful dissection in the appropriate plane.
Weakness of the left marginal mandibular branch of the facial nerve was present.
We performed this procedure on 19 patients and observed only 1 postoperative complication mild paresis of the right marginal mandibular branch of the facial nerve following the excision of a Warthin's tumor.
The superficial part of the gland is intimately related to the marginal mandibular branch of the facial nerve.
We observed only 1 postoperative complication; the patient who underwent excision of a Warthin's tumor developed mild paresis of the right marginal mandibular branch of the facial nerve.