Splenius capitis 3 m.
Floor of posterior triangle of neck.
The prevertebral fascia forms the floor of the posterior triangle of the neck figure 26 1c and d.
The anterior triangle and the posterior triangle of the neck each of them containing a few subdivisions.
Therefore pus in the posterior triangle deep to prevertebral fascia arising from tubercular cervical vertebra may track downwards and laterally along the.
Scalenus posterior 5 m.
The posterior triangle is bounded by the scm trapezius and middle third of the clavicle with a muscular floor formed by the lateral deep cervical muscles.
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The following structures are superficial to the prevertebral tascia.
It is split into two bellies by a tendon.
The floor of occipital triangle is formed from above downward by.
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.
A significant muscle in the posterior triangle region is the omohyoid muscle.
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.
The muscular floor of posterior triangle is covered by prevertebral fascia which extends around the brachial plexus and axillary artery continuation of subclavian artery as axillary sheath.
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Levator scapulae 4 m.
Courses from the hyoid bone en route to the scapula within the pretracheal fascia.
Semispinalis capitis 2 m.
A significant muscle in the posterior triangle region is the omohyoid muscle.
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.
The sternocleidomastoid muscle divides the neck into the two major neck triangles.
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 subdivided by the diagonally placed inferior belly of the omohyoid.
Indeed the posterior triangle forms the root of the upper limb.
The triangles of the neck are important because of their contents as they house all the neck structures.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.