Posterior triangle of neck — Free Anatomy Illustration | GPAI

Anatomy

Posterior triangle of neck

Simplified 2D anatomical surface-region diagram of the posterior triangle of the neck, shown as a broad triangular wedge on the lateral side of the neck with a broad inferior base and a narrow superior apex. The anterior border follows the posterior edge of the sternocleidomastoid muscle, the posterior border follows the anterior edge of the trapezius muscle, and the inferior base lies along the clavicle, specifically the middle third. Rendered as a clean pale flesh- or beige-toned shape with smooth soft-tissue contour, crisp outlined borders, and minimal internal landmark or labeled edge lines, functioning as a reusable regional anatomy element rather than a detailed full neck illustration.

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