The Platysma Muscle is a thin, broad, superficial muscle located in the neck and upper chest region. It extends from the mandible (jawbone) to the clavicle (collarbone) and the shoulder. Comprising a portion of the superficial musculature of the neck, the platysma is involved in various facial expressions and movements. The platysma plays a role in actions such as facial grimacing, lowering the jaw, and assisting in expressions of surprise or tension. Innervated by the facial nerve (cranial nerve VII), it is primarily a muscle of facial expression. While the platysma is not as prominently involved in movement as some deeper neck muscles, it contributes to the overall aesthetics and functionality of the face and neck. Surgical procedures, such as neck lifts or certain facial reconstructions, may involve considerations of the platysma for optimal results. Understanding the anatomy and function of the platysma is essential for professionals in fields like plastic surgery and facial aesthetics.
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