The posterior triangle has the following boundaries.
Muscles of the floor of the posterior triangle of the neck.
Anterior border of the trapezius.
Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone.
Interior belly ot the omohyoid muscle.
The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
It creates axillary sheath around subclavian artery and brachial plexus going from the root of the neck to the upper limb.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.
Posterior border of the sternocleidomastoideus.
Courses from the hyoid bone en route to the scapula within the pretracheal fascia.
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.
A significant muscle in the posterior triangle region is the omohyoid muscle.
The following structures are superficial to the prevertebral tascia.
It is split into two bellies by a tendon.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
It is split into two bellies by a tendon.