Flashcards in IVF, IVD, Spinal Ligaments Deck (39)
What tissue makes of the IV disc?
Type 1 collagen (outer); Type 2 collagen (inner)
The outer part of the IV disc is called?
How many concentric laminae make up the annulus fibrosus?
What is the orientation of the IV disc fibers of the concentric laminae?
65 degrees to the vertical
Adjacent laminae have fibers oriented how?
The opposite direction
What is the inner aspect of the IV disc called?
What molecules does the nucleus pulposus contain?
What are the most external regions of the disc called?
Where are the vertebral endplates thickest? thinnest?
What portion of the IV disc is innervated?
The outer 1/3
The innervated portion of the IV disc is supplied by what nerves?
Sinuvertebral (recurrent meningeal), Sensory nerves via the gray rami communicans
How does the IV disc receive nutrition?
Diffusion from the vertebral endplates facilitated by spinal movement
What is the superior boundary of the IVF?
Inferior vertebral notch and pedicle of the vertebra above
What is the anterior boundary of the IVF?
Vertebral bodies and disc
What is the inferior boundary of the IVF?
Pedicle and the superior vertebral notch of the vertebra above
What is the posterior boundary of the IVF?
Anterior aspect of the zygapophyseal joint and capsule
What are the contents of the IVF?
Spinal nerve, spinal nerve roots, DRG, spinal artery, veins, two-four sinuvertebral nerves, fat, and transforaminal ligaments
What can narrow the IVF?
Osteophytes or prolapsed discs
Internal disc disruptions may irritate spinal nerve roots how?
What area does the ALL cover?
The sacrum to the basal part of the occiput
Is the ALL weaker or stronger than the PLL?
What does the ALL prevent?
What area does the PLL cover?
Extends from C2 to the sacrum
Above C2 the PLL is called what?
What does the PLL prevent?
Where does the supraspinous ligament attach?
Tips of the spinous process
Beyond C7 what is the supraspinous ligament called?
What does the supraspinous ligament prevent?
What area does the interspinous ligament prevent?
Between the spinous processes of adjacent vertebra