The number of vertebrae present in the cervical, thoracic, lumbar, sacral and coccyx regions, respectively, are
7, 12, 5, 1, 1
The vertebrae are grouped into five categories:
Cervical vertebrae: 7, present in the neck
Thoracic vertebrae: 12, present in the upper back
Lumbar vertebrae: 5, located in the abdomen
Sacral vertebrae: 5, present in the pelvis
Coccygeal vertebrae: 4, present in the vestigial tail