Flashcards in IVD annulus fibrosus Deck (10)
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1
What is the appearance of the cervical annulus fibrosus?
a horse-shoe with the anterior margin thick and the lateral margins tapering to the uncinate processes; posterior margin is thin
2
What compensates for the thinness of the posterior part of the cervical annulus fibrosus?
posterior longitudinal ligament
3
What is the organization of the lumbar annulus fibrosus?
it has 12-14 concentric cylindrical lamellae
4
**What is the water concentration in the lumbar annulus fibrosus at birth and after thirty?
birth...78%; thirty...70%
5
what is the organizational pattern for glycosaminoglycans in the lumbar annulus fibrosus?
they typically have a binding site for hyaluronic acid and are thus aggregated
6
Which type of collagen is dominant in the annulus fibrosus?
collagen type I
7
What is the organizational pattern for collagen fibers in the annulus fibrosus?
they are parallel with one another in a single lamellus and angled
8
What is the organization of collagen fibers between lamellae?
collagen fibers will be angled in the opposite direction such that a spiral - counterspiral organization is observed
9
What is the average angle of collagen fibers within the annulus fibrosus?
they average 50 to 60 degrees
10
