Platysma Myoides Muscle

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** A broad, fan-shaped muscle located in the superficial fascia of the neck, extending superiorly from the inferior border of the mandible and inferiorly to the clavicle and the fascia of the anterior shoulder and thorax, that functions to depresses the mandible and wrinkle the skin of neck.

**Synonyms:** - Structure of platysma muscle (body structure)