It is subdivided by the diagonally placed inferior belly of the omohyoid.
Floor of posterior triangle of neck.
The sternocleidomastoid muscle divides the neck into the two major neck triangles.
The roof is formed by fascia and the floor is formed by the splenius capitus levator scapulae and scalene muscles.
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 following structures are superficial to the prevertebral tascia.
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The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
It is split into two bellies by a tendon.
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.
Scalenus posterior 5 m.
Splenius capitis 3 m.
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.
The anterior triangle and the posterior triangle of the neck each of them containing a few subdivisions.
Semispinalis capitis 2 m.
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.
The triangles of the neck are important because of their contents as they house all the neck structures.
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.
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Indeed the posterior triangle forms the root of the upper limb.
The floor of occipital triangle is formed from above downward by.
A significant muscle in the posterior triangle region is the omohyoid muscle.
The posterior triangle of the neck contains many muscles which make up the borders and the floor of the area.
It is split into two bellies by a tendon.
Levator scapulae 4 m.
A significant muscle in the posterior triangle region is the omohyoid muscle.
Courses from the hyoid bone en route to the scapula within the pretracheal fascia.
From superior to inferior 1 m.
Therefore pus in the posterior triangle deep to prevertebral fascia arising from tubercular cervical vertebra may track downwards and laterally along the.