Platysma
Last edit by Alaric Steinmetz on
The platysma belongs to the superficial layer of the ventral neck musculature. As a thin sheet of muscle, it covers nearly the entire anterior surface of the neck and is functionally classified as a muscle of facial expression.
Innervation
The platysma is innervated by the cervical branch of the Facial nerve[^1].
Clinical relevance
In rare and severe cases of Hemifacial spasm, unilateral involvement of the platysma may occur.
Figure
