THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Cervical Spine-7 vertebrae. Thoracic Spine-12 vertebrae. Lumbar Spine-5 vertebrae. Sacral Spine-5 fused vertebrae.

Detailed explanation-2: -The C5-C6 spinal motion segment includes the following structures: C5 and C6 vertebrae. These vertebrae are each composed of a vertebral body, a vertebral arch, and 2 transverse processes. Together they form paired, synovial facet joints with gliding movements.

Detailed explanation-3: -Five (or in some cases, six) vertebrae make up the lumbar spine, which provides support for much of the upper body and is rather flexible. Lumbar vertebrae are larger than the thoracic or cervical vertebrae, as they have to bear the weight of the spine and the head.