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Medial Branch of Posterior Ramus of Sixth Cervical Nerve (Left)
Nervous System

Medial Branch of Posterior Ramus of Sixth Cervical Nerve (Left)

Ramus posterior medialis nervi cervicalis sexti

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Quick Facts

Origin: Posterior ramus of sixth cervical nerve.

Course: Winds medially around the articular pillar of C6 vertebra before terminating into its terminal branches in the multifidus muscle.

Branches: Posterior cutaneous branch.

Supply: Motor innervation to semispinalis capitis, multifidus, and interspinales muscles. Sensory innervation to the skin of the medial back and to the zygapophyseal joints above and below the nerve.

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Origin

The medial branch of the posterior ramus of the sixth cervical nerve arises from the posterior ramus of the sixth cervical nerve. It is one of two branches, the other being the lateral branch.

Course

The medial branch of the posterior ramus of the sixth cervical nerve winds medially around the side and the dorsal aspects of the articular pillar of C6 vertebra, deep to semispinalis capitis muscle, before terminating in the multifidus.

Branches

The medial branch of the posterior ramus of the sixth cervical nerve gives rise to a posterior cutaneous branch.

Supplied Structures

The medial branch of the posterior ramus of the sixth cervical nerve provides motor innervation to the multifidus, semispinalis colli, semispinalis capitis, and trapezius muscles, before becoming cutaneous.

Somatic afferent neurons within the posterior cutaneous branch provide innervation to the skin overlying the trapezius and transmit general sensory information regarding pain, touch, pressure, vibration, etc.

Complete Anatomy

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Complete Anatomy