anatomy back 1 bones
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- Vertebral canal·
- Intervertebral foramen
what are the borders of the intervertebral foramen...
ant and inf:
- disc (anterior and inferior),
- vertebral body (superiorly),
- pedicle (true superiorly)
- the facet joints (posteriorly)
what emerges thru each intervertebral foramen
a spinal nerve
Posteriorly there is a set of boney plates and projections that serve what 3 functions?
- To protect the spinal cord
- To give attachments to muscles and ligaments·
- To articulate with the adjoining vertebrae
what encloses the spinal cord?
The neural Arch
The space that’s surrounded by the arch and the vertebral body is called
“The Vertebral Foramen”
shape of the neural foramen:
shape of the vertebra body:
what forms the neural arch?
what is the mass of bone btwn the facets?
what arises from the sides of the vertebral body as well as from the articular pillar?
what passes thru the transverse foramen?
what is the most mobile part of the spine? why?
- cervical vertebra
- in the axial pivot joint
- Partly bc of the curved shape of their bodies which make flexion and extension easy·
- And partly bc of shallow slope of their articular processes -makes lateral flexion easy
where does the most movement occur?
There is a greater degree of Intersegmental Movement occurring at the Atlantooccipital Joint and Atlantoaxial Joint because there are no discogenic restrictions
what type of joint is the atlantoaxial joint?
movements that occur in the spine?
- forward and lateral flexion
- rotation -combo of rotation and lateral flexion
- lateral flexion inhibits rotation
what is the name for C1?
does the atlas vertebra have a body?
what is the name for C2?
what hold the odontoid?
- transverse ligaments
- alar ligaments
movements assoc with occipital-atlas-axis articulations:
- rotation of the head (at atlantoaxial jts)
- flexion, ext, lateral flexion (at atlantooccipital jts)
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