The labels on this image corresponds each vertebra with the portion of the body it works with.
The labels C1 through C7 make up the cervical spine, which means the nerves that run through these vertebrae deal with symptoms like headaches, colds, dizziness, sinuses, acne, hearing, and other problems with your head and neck. The labels
T1 through T12 make up the thoracic spine and deals with symptoms such as, asthma, coughing, lower arm and hand pain, heart conditions, and many other symptoms in this area. This area extends all the way to where gas problems occur.
L1 through L5 make up the lumbar spine and deals with cramps, bladder problems, lower back pain, along with leg and foot circulation and pains.
The last label deals with the sacral vertebrae and involves bed wetting, and scoliosis.
Using diagrams similar to this, Chiropractors can decide which vertebrae can be adjusted to relieve your pain, or deal with your symptoms.