Splenius Cervicis

Musculus splenius cervicis

Upper Body NeckBackPosterior Chain

The deeper, lower partner of the splenius capitis that extends and rotates the cervical spine toward the same side. It contributes to posterior neck thickness and cervical extension strength trained alongside the splenius capitis in any neck-extension protocol.

Actions

Cervical extension (bilateral), Ipsilateral cervical rotation (unilateral), Ipsilateral cervical lateral flexion (unilateral)

Origin

Spinous processes of T3-T6.

Insertion

Posterior tubercles of the transverse processes of C1-C3 (C4).

Innervation

Lateral branches of the posterior (dorsal) rami of the lower cervical spinal nerves.

Blood supply

Deep cervical, transverse cervical, and occipital arteries.

Wikipedia ↗

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