Skip to Content
Home > Patients & Visitors > Health Library > Lumbosacral Region of the Spine
The spine is composed of 33 interlocking bones called
lumbosacral region of the spine (or lumbar spine)
consists of 5 lumbar vertebrae and 5 sacral vertebrae. The sacral vertebrae,
which are fused together, are called the sacrum.
A disc is located between each pair of lumbar vertebrae. The discs
are capsules of connective tissue with a soft, jellylike center. The discs
absorb shock and make the spine flexible. The bones of the sacrum are joined to
one another and have no discs between them.
The vertebrae are supported by ropy tissues called
ligaments and groups of muscles:
The spinal cord runs through the spinal canal, a tunnel that is
formed by the holes in the center of each of the vertebrae. Nerves branch from
the spinal cord, pass through openings (foraminae) between the vertebrae, and
branch to the lower body.
Current as of:
June 4, 2014
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Robert B. Keller, MD - Orthopedics
How this information was developed to help you make better health decisions.
To learn more, visit Healthwise.org
© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Send Us Your Feedback
North Kansas City Hospital.