Lumbar Section

The lumbar spine is the lower back that begins below the last thoracic vertebra t12 and ends at the top of the sacral spine or sacrum s1.
Lumbar section. These sections are labelled as the l1 l5 vertebrae. The lumbar vertebrae are in human anatomy the five vertebrae between the rib cage and the pelvis. Each lumbar spinal level is numbered from top to bottom l1 through l5 or l6.
Well for the lumbar spinal column there are five sections. The spinal cord ends at the top of the lumbar spine and the remaining nerve roots called the cauda equina descend down the remainder of the spinal canal. All about the l3 l4 spinal segment the l3 l4 spinal motion segment positioned in the middle of the lumbar spine plays an important role in supporting the weight of the torso and protecting the cauda equina nerves that descend from the spinal cord.
Lumbar vertebrae anatomy is generally classified by dividing the lumbar spine into five distinct sections. The lumbar region is sometimes referred to as the lower spine or as an area of the back in its proximity. They also protect the delicate spinal cord and nerves within their vertebral canal.
Many lumbar spinal conditions are also interrelated. Most people have 5 lumbar levels l1 l5 although it is not unusual to have 6. All about the l4 l5 spinal segment the l4 and l5 are the two lowest vertebrae of the lumbar spine.
Throughout the spine intervertebral discs made of. Lumbar spine anatomy and pain the lower back comprises the lumbar spine which is formed by vertebral bones intervertebral discs nerves muscles ligaments and blood vessels. Together with the intervertebral disc joints nerves and soft tissues the l4 l5 spinal motion segment provides a variety of functions including supporting the upper body and allowing trunk motion in multiple directions.
These vertebrae carry all of the upper body s weight while providing flexibility and movement to the trunk region. In tetrapod anatomy lumbar is an adjective that means of or pertaining to the abdominal segment of the torso between the diaphragm and the sacrum.