The five lumbar vertebrae are the largest vertebral bones and increase in size when moving inferiorly. The lumbar vertebrae play a key role in supporting the body and facilitating locomotion. Lumbar vertebra: Image of typical lumbar vertebra.
Which vertebrae have the largest size vertebral bodies?
The lumbar vertebrae are located between the ribcage and the pelvis and are the largest of the vertebrae. The pedicles are strong, as are the laminae, and the spinous process is thick and broad. The vertebral foramen is large and triangular.
Which section of the spine is the largest?
The five lumbar vertebrae, L1 to L5, are the most massive ones. Their main function is to support the cervical and thoracic spine. The lumbar region also absorbs most of the stress of lifting and carrying objects. Therefore, many spinal problems occur in the low back because of the weight the lumbar spine has to carry.
Which of the vertebrae are the largest?
The lumbar vertebrae are the some of the largest and heaviest vertebrae in the spine, second in size only to the sacrum. A cylinder of bone known as the vertebral body makes up the majority of the lumbar vertebrae’s mass and bears most of the body’s weight.
What portion of the spine has the largest and strongest vertebrae?
Lumbar Spine: In your low back, you have 5 vertebrae that are labeled L1 to L5 (the ‘L’ means lumbar). Some people have 6 lumbar vertebrae. These vertebrae are your largest and strongest vertebrae, responsible for carrying a lot of your body’s weight.
Which vertebrae does not have a body?
The atlas (C1 vertebra) does not have a body or spinous process. It consists of an anterior and a posterior arch and elongated transverse processes.
What are the four curves of the spine?
There are four natural curves in the spinal column. The cervical, thoracic, lumbar, and sacral curvature.
What are the 5 areas of the spine?
The spine is composed of 33 bones, called vertebrae, divided into five sections: the cervical, thoracic, and lumbar spine sections, and the sacrum and coccyx bones.
What absorbs shock in the spine?
The intervertebral discs are soft structures which act as shock absorbers between each of the vertebrae (bones) in the spine. A single disc sits between each vertebra.
What is L7 in the spine?
The seventh lumbar vertebra (L7) or its caudal articular processes are considered the most frequent sites of fractures, with fracture occurring more commonly than dislocation (Flatt et al., 1974).
What is the name of the top vertebrae in your spine?
The Atlas: The Top Bone in Your Cervical Spine
The atlas is also known as C1, and while other bones in your spine are numbered in such a way (eg, the first bone is your lumbar spine is known as L1), this vertebra is much different in shape and function compared to the rest of your vertebrae.
What are the names of the first two vertebrae in your spine?
The cervical spine is made up of 7 vertebrae. The first 2, C1 and C2, are highly specialized and are given unique names: atlas and axis, respectively.
What are the next 12 vertebrae called?
In human, thoracic vertebrae consists of 12 bones. From top to down, T1, T2, …, T12. A typical thoracic vertebra, seen from lateral side. In vertebrates, thoracic vertebrae compose the middle segment of the vertebral column, between the cervical vertebrae and the lumbar vertebrae.
What is the weakest part of the spine?
The weakest part of the spine is the cervical spine, which is made up of seven vertebrae.
What is the most inferior spinal nerve?
The most inferior of the spinal nerves, the coccygeal nerve leaves the spinal cord at the level of the conus medullaris via respective vertebrae through their intervertebral foramina, superior to the filum terminale.
What part of the vertebrae supports most of the body weight?
The lumbar spine – the lower back, composed of five vertebrae, provides support for the majority of your body’s weight.