Thoracic Published: " class="meta-date-link"> 9 April 2016 Written by CBAdmin No comments Rating:The middle section of the spine, or central abdomen. Connects the cervical to the lumbar. The thoracic spine has the 12 vertebrae, making it the largest of all spinal sections. « Back to Glossary Index Download article as PDF 0 comments Reply Click here to cancel reply. You must be logged in to post a comment.