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Meningeal Branch of Spinal Nerve (Thoracic; Right)
Nervous System

Meningeal Branch of Spinal Nerve (Thoracic; Right)

Ramus meningeus nervi spinalis

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The meningeal branches occur at all vertebral levels and originate directly from the anterior rami of the spinal nerves, with contributions from the gray communicating branches (gray rami communicantes), except at cervical levels C1-C5. Therefore, most of the meningeal branches contain sensory and sympathetic fibers. The meningeal branches at C6 and C7 spinal levels receive contributions from the vertebral nerve.


Each meningeal branch passes backwards (recurrent pathway) from their origin through the intervertebral foramen to enter the vertebral canal. These branches will form a plexus on the ventral surface of the dural sac as well as provide innervation to the vertebral column ventral to the dural sac.


Each meningeal branch has ascending, descending, and transverse branches, each of which communicates with the corresponding branches above, below, and from the opposite side of the body.

Supplied Structures

The meningeal branches supply the ventral surface of the dural sac, periosteum of the vertebral bodies, posterior aspect of intervertebral discs, posterior longitudinal ligament, dura mater along the clivus, and atlantoaxial joint.

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Spinal Nerve

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A spinal nerve is comprised by a ventral root that originates from the cord's anterolateral aspect and a dorsal root from the posterolateral aspect, both of which are continuous with the spinal cord.

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