The following statements provide distinguishing characterizes of the vertebrae composing the vertebral column. Using key choices, identify each described structure or region by inserting the appropriate term(s) or letter(s) in the spaces provided Key Choices A. Atlas B. Axis C. Cervical vertebra-typical D. Coccyx E. Lumbar Vertebra F. Sacrum G. Thoracic vertebra Type of vertebra(e) containing foramina in the transverse processes, through which the vertebral arteries ascend to reach the brain ___ Its dens provides a pivot for rotation of the first cervical vertebra ___ Transverse processes have facets for articulation with ribs; spinous process points sharply downward ___ Composite bone; articulates with the hip bone laterally ___ Massive vertebrae, weight-sustaining ___ Tailbone; vestigial fused vertebrae ___ Supports the head, allows the rocking motion of the occipital condyles Seven components; unfused Twelve components; unfused Complete the following statements by inserting your answers in the answer blanks. In describing abnormal curvatures, it could be said that (1) is an exaggerated thoracic curvature, and in (2) the vertebral column is displaced laterally. In vertebral discs are made of (3) tissue. The discs provide (4) to the spinal column.