The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
Muscles of the floor of the posterior triangle of the neck.
A significant muscle in the posterior triangle region is the omohyoid muscle.
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 following structures are superficial to the prevertebral tascia.
A significant muscle in the posterior triangle region is the omohyoid muscle.
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.
The posterior triangle has the following boundaries.
It is split into two bellies by a tendon.
Interior belly ot the omohyoid muscle.
Middle one third of the clavicle.
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 posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.