What is the regional vertebral characteristics of the 3 vertebrae's and 2 fused ones?
* cervical vertebrae - retangle like containing bifid spinous process, triangular vertebral foramen, has transverse foramen, superior/anterior facets located in slightly opposite positions
* thoracic vertebrae - body is slightly heart shape, has demifacets (for ribs), long spinous process, circular vertebral foramen, transverse processes articulate with ribs, provides most of the rotation
* lumbar vertebrae - bears most of the weight so it has a massive body, short thick pedicles & laminae, triangular vertebral foramen, articulating facets prevent rotation, and short think spinous process
* sacrum - five fused vertebrae that articulates with the bones of the pelvis
* coccyx - 4 (or 3-5) fused vertebrae, also known as the tail bone