That part of the body where the base of the skull is joined to the top of the spine. Inside these bony enclosures, the craniovertebral junction is also where the brain stemThis is the most primitive part of the brain, connecting the rest of the brain to the body, via the spinal cord. In addi... continues downwards as the spinal cordThe main nerve trunk running down the spinal canal and connecting the individual’s mind and consciousness to the rest ....