The platysma muscle is a broad sheet of muscle arising from the fascia covering the upper parts of the pectoralis major muscle and deltoid muscle. Its fibers cross the clavicle, and proceed obliquely …

Nov 18, 2025 · The platysma is a broad, thin, paired muscle that covers the front and sides of the neck. It belongs to the group of cervical muscles and forms part of the superficial layer of the anterior neck, …

Dec 3, 2023 · Attachments, innervation and functions of the platysma. The platysma is a thin sheet-like muscle that lies superficially within the anterior aspect of the neck. It arises in the upper thoracic and …

The platysma is a broad muscle which arises from the fascia that covers the upper segments of the deltoid and pectoralis muscles. Its thin muscle fibers cross over the clavicle and proceed obliquely …

Aug 27, 2025 · The platysma is a broad, thin, and superficial muscle located in the neck and lower face. This unique positioning allows it to play a noticeable role in both neck movement and facial …

Explore the platysma muscle's origin, actions, and key features. Understand its role in neck tension, mandible depression, and facial expressions.

Platysma is a broad, thin sheet like muscle that lies superficially at the anterolateral aspect of neck bilaterally [1]. It originates in the upper thoracic and shoulder regions from a fascia that covers the …

The platysma is a thin, broad muscle that extends from the upper chest to the lower jaw. It is a paired muscle, with one located on each side of the neck. [3] The platysma is responsible for several …

Dec 22, 2025 · The platysma muscle is a broad sheet of muscle arising from the pectoral (chest) and deltoid (shoulder) muscles and rises over the collarbone (clavicle), proceeding upward in a slanting …

The platysma is a superficial muscle of facial expression located in the neck. It lies within the superficial fascia, just beneath the skin — more specifically, as part of the superficial musculoaponeurotic …