Intervertebral Disc Flashcards
The IVD is fibrocartilaginous sandwich with outer ______ and inner _____ collagen fibers.
Type 1 - outer
Type II - Inner
The outer part, annulus fibrosus, has _____ concentric laminae fibers.
15-20
The fibers of the annulus angle about ____ degrees to the vertebral body. (____ to the vertical.)
30
65
The nucleus purposes has a ______ consistency and is located where in the lumbar region?
Gelatinous
posterocentrally
The nucleus pulposus contains what that attracts water?
proteoglycans
Which part of the annulus fibrosus is innervated?
Outer 1/3
What innervated the AF posteriorly?
sinuvertebral (recurrent meningeal)
What innervated the AF anterolaterally?
Sensory nerves from the grey sympathetic ram communicans
The IVD is not well vascularized and is nourished how?
By diffusion
The diffusion (aka ______) is facilitated by what?
imbibition
movment
How many IVD are there?
23
Where is there NOT a vertebral disc?
C1/C2
