The borders of the posterior triangle of the neck are formed by the trapezius muscle posteriorly the sternocleidomastoid muscle anteriorly and the omohyoid muscle inferiorly.
Muscles of the floor of the posterior triangle of the neck.
A significant muscle in the posterior triangle region is the omohyoid muscle.
Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone.
Courses from the hyoid bone en route to the scapula within the pretracheal fascia.
The muscular floor of posterior triangle is covered by prevertebral layer of deep cervical fascia which creates the fascial carpeting of the floor of the posterior triangle.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.
Anterior border of the trapezius.
It is split into two bellies by a tendon.
The posterior triangle has the following boundaries.
Posterior border of the sternocleidomastoideus.
Middle one third of the clavicle.
It is split into two bellies by a tendon.
Interior belly ot the omohyoid muscle.
The following structures are superficial to the prevertebral tascia.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.