The definition of asinine is to be silly, stupid or ridiculous. An example of asinine is a foolish prank played on a friend.
In humans, there are twelve thoracic vertebrae and they are intermediate in size between the cervical and lumbar vertebrae; they increase in size going towards the lumbar vertebrae, with the lower ones being a lot larger than the upper.
In total, there are 33 vertebrae in the spinal column: 1  Cervical region (neck) â 7 vertebrae, abbreviated C1 through C7. 2  Thoracic region (middle back) â 12 vertebrae, abbreviated T1 through T12. 3  Lumbar region (low back) â 5 or 6 vertebrae, abbreviated L1 through L5 or L6. 4  Sacral region (pelvis) â 5 fused vertebrae, abbreviated S1 through S5.