Your lumbar spine consists of the five vertebrae in your lower back. It provides support for the weight of your body, surrounds and protects your spinal cord, and allows for a wide range of body motions. The upper lumbar vertebrae protect the spinal cord in their vertebral arches.

Understanding the Context

The lower vertebrae provide a bony enclosure for the cauda equina nerves that descend from the spinal cord. The lumbar vertebrae are five in number and desginated as vertebrae L1-L5. They are primarily responsible for bearing the weight of the upper body (and permitting movement) and consequently represent the largest individual segments of the vertebral column. It consists of 5 bones, from the top down, L1, L2, L3, L4 and L5.

Key Insights

The lumbar vertebrae are located between the thoracic vertebrae and pelvis. They form the lower part of the back in humans, and the tail end of the back in quadrupeds [clarify]. In humans, there are five lumbar vertebrae. The lumbar spine includes five vertebrae that help with mobility and stability. Lumbar vertebrae are larger because they carry the load from your head down to the lower spine.

Final Thoughts

The lumbar spine has a lordotic curve that helps keep the spine properly aligned. The lumbar spine is the third major region of the vertebral column, located in the lower back between the thoracic and sacral regions. It is made up of five distinct vertebrae, which are the largest of the vertebral column. The lumbar vertebrae consist of five individual cylindrical bones that form the spine in the lower back. These vertebrae carry all of the upper body's weight while providing flexibility and movement to the trunk region. The lumbar spine is the third and lowermost part of the spinal column, consisting of 5 lumbar vertebrae, L1-L5.

They are found in the lower back, supporting the body’s weight and providing flexibility and movement. These are the largest among all the vertebrae found in the spine. The lumbar vertebrae consist of five large, robust bones (L1–L5) located in the lower back. These vertebrae form the lumbar portion of the vertebral column and are the largest of all vertebrae due to the high mechanical load they bear.