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