Final answer:
The lumbar section of the vertebral column contains five lumbar vertebrae, numbered L1 through L5. They are structurally designed to support the highest amount of body weight and contribute to the flexibility and strength of the spine.
Step-by-step explanation:
There are five lumbar vertebrae in the lumbar section, numbered as L1-L
The lumbar region of the vertebral column encompasses the lower back and contains five lumbar vertebrae, which are denoted as L1 through L5. These vertebrae are known for carrying the largest amount of body weight and are distinctively larger and thicker than those in the other spinal regions. The lumbar spine facilitates various movements and supports the weight of the torso, contributing to the flexibility and strength of the spine.
The superior articular processes of the lumbar vertebrae face medially, which, along with the intervertebral discs, limit rotation of the lumbar spine and help stabilize the region. The configuration of the lumbar vertebrae fits with the function of this area and the needs of supporting the upper body's weight and allowing various forms of motion.