Fig. 39-13. Variations in vertebrae. B shows the common arrangement. In A, "cranial shift," a cervical rib articulates with C.V.7 and rib 12 is small. L.V.S is partially "sacralized" and S.V.5 is partially freed. In C, "caudal shift," rib 12 is large and a small lumbar rib is present. S.V.1 is partially "lumbarized" and Co.1 is incorporated into the sacrum. (After Schinz et al.) Click for high resolution image.