Muscles forming floor of post cerv triangle cont d anterior scalene hidden behind scm o.
Muscles forming floor of posterior triangle.
Boundaries of posterior cervical triangle apex.
Floor posterior arch of atlas and posterior atlantooccipital membrane ligament.
This ligament is broad and extends from the posterior margin of the foramen magnum to the posterior arch of atlas.
The following structures are superficial to the prevertebral tascia.
Semispinalis capitis 2 m.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
Investing layer of the cervical fascia.
Splenius capitis 3 m.
The next video is starting stop.
The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.
Levator scapulae 4 m.
Typically the triangle of auscultation is covered by the scapula.
Anterior tubercles of transverse proc.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.
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.
Muscles covered by the prevertebral layer of the cervical fascia.
Scalene tubercle of inner border of 1st rib and near groove of subclavian a.
Interior belly ot the omohyoid muscle.
From superior to inferior 1 m.
The floor of the posterior triangle is formed by the splenius muscles the levator scapula the three scalene muscles and the inferior belly of the omohyoid n26.
Scm and trapezius meet on the superior nuchal line of the occipital bone.
Scalenus posterior 5 m.
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.
Suboccipital muscles and contents of the suboccipital triangle.
A roof.
Bounded by the scm trapezius and middle third of the clavicle.
The inferior belly crosses the posterior triangle travelling in an supero medial direction and splitting the.
A significant muscle in the posterior triangle region is the omohyoid muscle.
It is split into two bellies by a tendon.