The transverse foramen is an opening within the transverse process of the cervical vertebrae. Therefore, there is one transverse foramen on each side of the vertebra. The transverse foramen is also commonly called by its latin name, the foramen transversarium. The transverse foramina (plural) are not found in the thoracic or lumbar vertebrae. The transverse foramen transmits the vertebral artery and vein as well as the vertebral nerve, a branch from the cervicothoracic ganglion. However, the transverse foramina in the seventh cervical vertebra (C7) only transmit the vertebral veins. On the rare occasion, the transverse foramina of C7 may transmit the vertebral artery.
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