What are the Pedicles What are the functions of the Pedicles?
Pedicles. Each vertebra has two cylinder-shaped projections (pedicles) of hard bone that stick out from the back part of the vertebral body, providing side protection for the spinal cord and nerves. The pedicles also serve as a bridge, joining the front and back parts of the vertebra.
What are pedicles and laminae?
The pedicle is a stub of bone that connects the lamina to the vertebral body to form the vertebral arch. Two short, stout processes extend from the sides of the vertebral body and joins with broad flat plates of bone (laminae) to form a hollow archway that protects the spinal cord.
What connects laminae of vertebrae?
The upper surfaces of the laminae are rough to give attachment to the ligamenta flava. These ligaments connect the laminae of adjacent vertebra along the length of the spine from the level of the second cervical vertebra.
What attaches to spinous process?
Most of the muscles that attach to the spinous processes act to extend the vertebral column. Some muscles attaching to the spinous processes also rotate the vertebrae to which they attach. Lateral to the spinous processes are the vertebral grooves. These grooves are formed by laminae in the cervical and lumbar regions.
Where is the pedicle of the spine?
The pedicle is a short projection of bone that comes directly off the back of the vertebral body. The pedicle lies between the back of the vertebral body and the transverse process. There are two pedicles per vertebra, one on each side.
What is the importance of lamina and pedicle?
The pedicles help encase the spinal cord and act as a bridge between the vertebral body and the rest of the vertebra. The lamina is attached to the pedicles and completes the circle of protection around the spinal cord.
What do the Pedicles laminae and spinous process form?
The vertebral arch consists of the pedicles, which attach to the vertebral body, and the laminae, which come together to form the roof of the arch. Arising from the vertebral arch are the laterally projecting transverse processes and the posteriorly oriented spinous process.
What is the difference between a pedicle and a lamina?
The pedicles are anchored to the posterior side of the vertebral body. Each lamina forms part of the posterior roof of the vertebral arch. The large opening between the vertebral arch and body is the vertebral foramen, which contains the spinal cord.
What are the connections between the arches of the vertebrae?
Joints of the vertebral arches Adjacent vertebral arches are connected by synovial joints called zygapophyseal (facet) joints. They are formed between superior and inferior articular facets. These joints facilitate flexion and extension in the cervical and thoracic spines.
Where is the pedicle located?
Pedicle. The pedicle is a short projection of bone that comes directly off the back of the vertebral body. The pedicle lies between the back of the vertebral body and the transverse process. There are two pedicles per vertebra, one on each side.
Which type’s of vertebrae have transverse processes and pedicles?
cervical vertebra
A cervical vertebra is composed of a body, pedicle, transverse process, superior articular process, inferior articular process, lamina, and spinous process (Fig. 5-1).
What is the spinous process?
Spinous process is a bony projection off the posterior (back) of each vertebra. The spinous process protrudes where the laminae of the vertebral arch join and provides the point of attachment for muscles and ligaments of the spine.
What is the pedicle of the lamina?
Pedicle Definition. The pedicle is a stub of bone that connects the lamina to the vertebral body to form the vertebral arch.
What is the lamina of the spine?
The lamina is the part of the vertebra that connects the spinous process and the transverse process. There are two laminae, located on either side of the spinous process. The lamina is often the site of back surgery when you need to relieve the symptoms caused by pressure on the spinal nerve roots. This can happen in the case of spinal stenosis.
What is the pedicle of the spinal cord?
Spinal bone with body, bony ring, pedicle and more. The pedicle is a short projection of bone that comes directly off the back of the vertebral body. The pedicle lies between the back of the vertebral body and the transverse process. There are two pedicles per vertebra, one on each side.
What are the pedicle and transverse processes?
These processes provide sites to which back muscles and ligaments attach. The pedicle is a short projection of bone that comes directly off the back of the vertebral body. The pedicle lies between the back of the vertebral body and the transverse process. There are two pedicles per vertebra, one on each side.