Scalenus posterior muscle

In this article we will discuss about Scalenus posterior muscle. So let’s get started.

Scalenus posterior muscle

It originates from the posterior tubercles of transverse processes of C5-C7 and gets inserted into the outer surface of second rib. It is innervated by the spinal nerves C6,C7 and C8 and artery supply is through the ascending cervical artery. It’s chief action is elevation of second rib and ipsilateral flexion of neck.

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