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 …

Dec 3, 2023 · 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 shoulder regions from a fascia that …

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 …

Dissimilar to other muscles of the body that lie deep to the subcutaneous tissue, the platysma is located within the subcutaneous tissue of the neck (superficial layer of the cervical fascia).

Dec 31, 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 …

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

Oct 14, 2024 · Acting from its inferior attachment, the platysma helps depress the mandible and draw the corners of the mouth inferiorly, as in a grimace. As a muscle of facial expression, the …

The platysma (Latin: platysma) is a broad and flat neck muscle extending from the lower part of the face to the upper thorax. It is classified as the superficial neck muscle.

Mar 27, 2025 · The platysma muscle is a key neck muscle. Learn about its anatomy, functions, and role in neck movement, providing an essential primer for understanding neck function.

Traditionally, the depiction of the platysma was as mainly a cervical muscle with most anatomy textbooks showing only a small extension of the platysma over the mandibular border onto the …