Anterior border of the trapezius inferiorly. The posterior neck triangle is covered superficially to deep by the skin superficial and deep cervical fascia and the platysma muscle.

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The posterior triangle of the neck is home to parts of several muscles.

Posterior triangle of neck. Bounding a large anatomic region the posterior neck triangle further divides into two smaller triangles by the inferior omohyoid muscle. Its base is downwards and apex is upwards and backwards. The posterior triangle of the neck forms the posterior compartment of the neck and is separated from the anterior triangle by the sternocleidomastoid muscle.

The triangular area behind the sternocleidomastoid muscle and in front of trapezius muscle on the side of neck is called the posterior triangle. Anterior middle and posterior scalenes. Posterior border of the sternocleidomastoideus posteriorly.

Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone anteriorly. These subdivisions include the occipital and subclavian triangles. The inferior triangle is known as the subclavian triangle and contains the distal portion of the subclavian artery.

The posterior triangle has the following boundaries. The larger superior part is termed the occipital triangle. If untreated the disease progresses inexorably to involve the central nervous system with the classical signs of sleeping sickness and ultimately death.

The omohyoid muscle splits the posterior triangle of the neck into two. Swollen lymph glands in the posterior triangle of the neck winterbottom s sign are often present in t. The triangles of the neck are surgically focused first described from early dissection based anatomical studies which predated cross sectional anatomical.