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.
Quick Answer. Adult humans have about 24 vertebrae. Children are born with about 33 vertebrae, but as they grow, some of the bones fuse together. Vertebrae are the bones that make up the spinal column.