Anatomy of the Neck
The neck is composed of several anatomical layers, including the skin, subcutaneous tissue, and underlying muscles.
The platysma muscle is a broad, sheet-like muscle that extends from the lower face down toward the collarbone. It is a depressor muscle that pulls down when contracted and contributes to the appearance of the neck and jawline transition.
Platysmal bands are vertical lines formed by the platysma muscle that run from the jawbone to the collarbone. Neck bands are visible during muscle contraction and may become more visible with age.
Together, these anatomical components influence the appearance of the neck and how it may change over time.