A significant muscle in the posterior triangle region is the omohyoid muscle.
Floor of the posterior triangle.
The posterior triangle is crossed about 2 5 cm above the clavicle by the inferior belly of the omohyoid muscle which divides the space into two triangles.
Fascial carpeting of the posterior triangle.
It shares anterior and inferior margins with the posterior triangle.
Levator scapulae 4 m.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.
The following structures are superficial to the prevertebral tascia.
However it is limited superiorly by the inferior border of omohyoid.
The lower part of the posterior triangle is crossed.
The floor of occipital triangle is formed from above downward by.
The roof is formed from the skin fascia and platysma.
It is bounded in front by the posterior border of sternocleidomastoid behind by the anterior border of trapezius and below by the inferior belly of omohyoid.
Interior belly ot the omohyoid muscle.
A significant muscle in the posterior triangle region is the omohyoid muscle.
Indeed the posterior triangle forms the root of the upper limb.
Courses from the hyoid bone en route to the scapula within the pretracheal fascia.
An upper or.
Semispinalis capitis 2 m.
It is split into two bellies by a tendon.
Scalenus posterior 5 m.
The superior lumbar grynfeltt lesshaft triangle is formed medially by the quadratus lumborum laterally by the posterior border of internal abdominal oblique muscle and superiorly by the 12th rib.
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 floor of the superior lumbar triangle is the transversalis fascia and its roof is the external abdominal oblique muscle.
Scalenus medius the first digitation of serratus anterior and the first rib are in the floor of this triangle.
Splenius capitis 3 m.
The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.