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.
The cervical spine reliably has seven vertebrae in humans (1,2). We counted the first seven vertebrae as cervical vertebrae (cervical ribs were not documented), with the rib-bearing vertebrae below these labeled as thoracic vertebrae and the nonârib-bearing vertebrae below these labeled as lumbar vertebrae.