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Triangles Of Neck


  1. Anterolateral aspect (side) of neck is divided by sternocleidomastoid muscle into anterior triangle in front of the muscle and posterior triangle, behind the muscle.

Posterior Triangle


Suboccipital Triangle



It lies more deeply in upper part of back of neck just below the occipital bone. It is bounded: - (i) Superomedially: -rectus capitis posterior major and minor; (ii) Superolaterally: - Obliques capitis superior; and inferolaterally: -Obliques capitis inferior. Floor is formed by posterior atlantooccipital membrane and posterior arch of atlas. Its contents are 3rdpart of vertebral artery, suboccipital nerve (dorsal ramus of C1), and suboccipital venous plexus.


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