The cervical spinal nerve 2 (C2) is a spinal nerve of the cervical segment.American Medical Association
Nervous System -- Groups of Nerves It is a part of the ansa cervicalis along with the C1 and C3 nerves sometimes forming part of

Superior root of the ansa cervicalis The ansa cervicalis (or ansa hypoglossi in older literature) is a loop of nerves that are part of the cervical plexus. It lies superficial to the internal jugular vein in the carotid triangle. Its name means "handle of the neck" in Latin. Branch ...

. it also connects into the

inferior root of the ansa cervicalis The ansa cervicalis (or ansa hypoglossi in older literature) is a loop of nerves that are part of the cervical plexus. It lies superficial to the internal jugular vein in the carotid triangle. Its name means "handle of the neck" in Latin. Bran ...

with the C3. It originates from the spinal column from above the cervical vertebra 2 (C2). it innervates the rectus capitis anterior and rectus capitis lateralis muscles, and provides sensory nerves to the trapezius. the lesser occipital nerve, greater auricular nerve, and the transverse cervical nerve all emerge from C2, with the ladder two shared with the C3.

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Spinal nerves {{neuroanatomy-stub