part of part of innervated by has muscle insertion mouth nerve of cervical vertebra facial muscle platysma NCIT:C33329 MA:0003026 EMAPA:18190 EHDAA:8270 FMA:45738 BTO:0005124 MFMO:0000059 The platysma is a pharyngeal arch 2 muscle and a superficial facial muscle that participates in oral/pharyngeal behaviors and is innervated by the cervical branch of the facial nerve. It attaches to the mandible and it attaches to the skin of the head, neck, and thoracic region where it is found superficial to the clavicle. Burrows et al. (2011) argue that in hylobatids (and, presumably, other primates) the platysma in the region of the modiolus represents both the cervicale and myoides muscles. UBERON:0005467 platysma muscle neck platysma muscle EHDAA2:0001474 VHOG:0000931 SCTID:244754004 Human variation notes: Variations occur in the extension over the face and over the clavicle and shoulder; it may be absent or interdigitate with the muscle of the opposite side in front of the neck; attachment to clavicle, mastoid process or occipital bone occurs. A more or less independent fasciculus, the occipitalis minor, may extend from the fascia over the trapezius to fascia over the insertion of the sternocleidomastoideus. Wikipedia:Platysma_muscle hypodermis skeletal muscle layer orbicularis oris muscle