Answer
The four major regions of the spinal cord are the cervical, thoracic, lumbar, and sacral regions. The two major enlargements are the cervical and lumbar enlargements.
Work Step by Step
The spinal cord can be divided up into four major regions: the cervical (head and neck), the thoracic (chest), the lumbar (lower back), and sacral (butt). When the spinal cord is a little thicker than elsewhere, there are more nerve offshoots. We call those regions enlargements. The two enlargements are the cervical, which gives rise to the nerves of the upper limbs, and the lumbar, which gives rise to the nerves to the pelvic region and lower limbs. (Pg 475).
