The body is the largest part of the vertebrae and the part that bears the most weight. The lamina is the lining of the hole (spinal canal) through which the spinal cord runs. The spinous process is the bony protrusions you feel when you run your hand down your back.
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.
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.
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 are the top 7 vertebrae called?
Regions of the Spine
Cervical (neck)- the top seven vertebrae/bones are called C1-C7. Thoracic (upper back)- the next 12 vertebrae/bones are called T1-T12. Lumbar (lower back)- the next five vertebrae/bones are called L1-L5.
What separates the vertebrae in life?
The bodies of the vertebrae are separated from each other by intervertebral discs. The body is mainly spongy bone and red marrow, but the margins of the upper and lower surfaces consist of a ring of compact bone, the vertebral end-plates.
What is the difference between vertebrae and vertebra?
As nouns the difference between vertebra and vertebrae
is that vertebra is any of the small bones which make up the backbone while vertebrae is ; the bones that make up the spinal column.
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 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 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 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 part of your spine controls your legs?
The lumbosacral spinal cord and nerve supply legs, pelvis, and bowel and bladder. Sensations from the feet, legs, pelvis, and lower abdomen are transmitted through the lumbosacral nerves and spinal cord to higher segments and eventually the brain.
What are the names of the 26 vertebrae?
Terms in this set (6)
- Vertebral Column (26 bones) Location: Posterior midline of axial skeleton. …
- Cervical vertebrae (C1-C7) Location: …
- Thoracic vertebra (T1-T12) Location: …
- Lumbar vertebrae (L1-L5) Location: …
- Sacral vertebrae. Sacrum. …
- Coccyx (1) Location:
What should a spine look like?
The normal spine has an “S”-like curve when looking at it from the side. This allows for an even distribution of weight. The “S” curve helps a healthy spine withstand all kinds of stress. The cervical spine curves slightly inward, the thoracic curves outward, and the lumbar curves inward.