Hypoglossal communicating branch of second cervical nerve
Ramus communicans hypoglossus nervi cervicalis secundi
- Latin synonym: Ramus communicans nervi spinalis C2
- Synonym: Hypoglossal communicating branch of spinal nerve C2
Definition
The hypoglossal communicating branch of second cervical nerve (C2) consists of small nerve fibers that connect with the hypoglossal nerve near the transverse process of the atlas. This connection is less frequently discussed compared to the more prominent relationship between the C1 nerve and the hypoglossal nerve. The C2 branches, together with those from the C1 nerve, form a nerve plexus that provides motor innervation to the prevertebral muscles, including the rectus capitis anterior and rectus capitis lateralis. Additionally, this plexus contributes to the innervation of the atlanto-occipital joint.
References
Iwanaga, J., Fisahn, C., Alonso, F., DiLorenzo, D., Grunert, P., Kline, M.T., Watanabe, K., Oskouian, R.J., Spinner, R.J., Tubbs, R.S. Microsurgical Anatomy of the Hypoglossal and C1 Nerves: Description of a Previously Undescribed Branch to the Atlanto-Occipital Joint, World Neurosurgery, Vol 100, 2017, pp. 590-593,
