Posterior triangle of neck

 

The posterior triangle of the neck lies behind the sternocleidomastoid as it runs into the its attachment to the superior nuchal line of the occipital bone.

Borders

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Anterior border is made up of the posterior border of sternocleidomastoid

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Posterior border is formed by the anterior wall of trapezius

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Base: Inferior boundary is formed by the clavicle at its superior aspect

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Roof is formed by deep investing fascia of neck running from trapezius. It is pierced by cutaneous nerves and vessels which include greater occipital nerve, lesser occipital nerve, greater auricular nerve and transverse nerve of neck

Content

It contains parts of brachial plexus  and also lower 1/3 of external jugular vein as it crosses sternocleidomastoid.

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Occipital triangle

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Omoclavicular (subclavian) triangle

 

 

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Electronic School of Medicine
Creator: Oluwole Ogunranti

 
Posterior triangle of neck - muscles - 3D models

 


Posterior triangle: roll over mouse

 

 

 

Dissector
Lymphatic drainage
Organ integration
Clinical anatomy

Intervertebral joints

Intervertebral arches joints

Atlanto-occipital joint

Median atlanto-axial

Lateral atlanto-axial joint

Injuries to neck
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