7.1: Cervical Spine - Anatomy Flashcards
Upper Cervical Spine Area
Cervicocephalic/Cervicocranial region
Area for lower cervical spine
Cervicobrachial
Cervicocranial region includes what vertebrae?
C0-C2
How many degrees of flexion/extension for the atlanto-occipital joint?
15 to 20 degrees
What type of joint is the atlanto-occipital joint
ellipsoid
The anterior membrane is strengthened by what ligament?
anterior longitudinal ligament
What replaces the ligamentum flavum between the atlas and occiput?
Posterior membrane
Broad band covering the dens and its ligaments that is found within the vertebral canal and is a continuation of the posterior longitudinal ligament
Tectorial membrane
2 strong rounded cords found on each side of the upper dens that passes upward and laterally to attach on the medial side of the occipital condyles
Alar ligaments
What does the alar ligament limit
flexion and rotation
What ligament plays a major role in stabilizing C1 and C2, especially during rotation?
Alar ligament
Most mobile articulation in the cervical spine
Atlanto-axial joint (C1-C2)
what type of joint is the atlanto-axial joint
pivot
T/F: if a person talks or chews, there is movement in the atlanto-axial joint
true
main supporting ligament of the atlanto-axial joint
transverse ligament of atlas
The transverse ligament of the atlas is weakened by what conditions?
rheumatoid arthritis
As the transverse ligament crosses the dens, how many projections does it give off?
2 projections (1 superiorly to the occiput; 1 inferiorly to the axis)
What does the projections of the transverse ligament form?
cruciform ligament
T/F: The vertebral artery passes through the C7 transverse foramen
False. It passes around the vertebral body, not through the foramen
Pain in the cervicobrachial area is commonly referred where?
UE
the vertebral and internal carotid arteries are stressed by what motion of the cervical spine?
primarily by rotation, extension and traction; other movements can also stretch the artery
How many degrees of rotation and extension can significantly decrease blood flow of the vertebral artery?
20 degrees
4 places where the vertebral artery is most commonly stressed
When it enters C6 transverse processes
within the bony canals of the vertebral transverse processes
between C1 and C2
between C1 and the entry into the skull
Out of the 4 areas, which has the greatest potential for problems?
Between C1-C2
Between C1 and the entry of the arteries into the skull