Which region of the spine is referred to as the low back?

The lumbar region of the spine is commonly referred to as the low back. This region is situated between the thoracic spine, which is located in the upper back, and the sacral region, which is part of the pelvis. The lumbar spine consists of five vertebrae (L1 to L5) and is responsible for supporting much of the body's weight, allowing for a range of movements such as bending and twisting. The structure of the lumbar vertebrae is designed to absorb shock and provide stability, making it crucial for overall mobility and posture. This region is often a focus in discussions around back pain and injury, as it is subject to a lot of strain from activities and body mechanics.