Source:http://linkedlifedata.com/resource/umls/id/C0728985
NCI: Those vertebrae immediately behind (caudal to) the skull, C1-C7 in man.,NCI: Any one of the seven vertebrae that start with C1, connecting the skull to the spine, and ends with C7, which joins the cervical with the thoracic spine. (NCI),NCI: Any one of the seven vertebrae that start with C1, connecting the skull to the spine, and ends with C7, which joins the cervical with the thoracic spine.