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The cervical spinal nerve 1 (C1) is a spinal nerve of the cervical segment. C1 carries predominantly motor fibres, but also a small meningeal branch that supplies sensation to parts of the dura around the foramen magnum (via dorsal rami).

It originates from the spinal column from above the cervical vertebra 1 (C1).

The dorsal root and ganglion of the first cervical nerve may be rudimentary or entirely

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