Day 5 (pg 158) Flashcards
What are the sources of innervation of the intervertebral disc?
the sinu-vertebral nerve (sinus vertebral nerve, recurrent meningeal nerve), fibers from the ventral primary ramus, fibers form the withe ramus communicans, fibers from the paradiscal ramus communicans, fibers from the gray ramus communicans
What nerve(s) have been shown to give off the sinus vertebral/sinu-vertebral recurrent meningeal nerve?
the mixed spinal nerve, ventral primary ramus, dorsal primary ramus, gray ramus communicans and white ramus communicans have all been implicated
the recurrent meningeal/sinu-vertebral/sinus vertebral nerve has typically been shown to originate from which source?
the gray ramus communicans
What part of the intervertebral disc is innervated by the recurrent meningeal/sinu-vertebral/sinus vertebral nerve?
the outer lamellae of the annulus fibrosis at the posterior part of the intervertebral disc
What forms the anterior neural plexus of the vertebral column?
fibers from the ventral primary ramus
What part of the intervertebral disc is innervated by fibers form the ventral primary ramus?
the outer lamellae of the annulus fibrosis at the anterior and lateral part of the intervertebral disc
What innervates the annulus fibrosis at the lateral part of the intervertebral disc?
fibers form the ventral primary ramus, fibers from the white ramus communicans, fibers from the paradisiacal ramus communicans, fibers from the gray ramus communicans
What part of the intervertebral disc is innervated by fibers from the white ramus communicans?
the outer lamellae of the annulus fibrosis at the lateral part of the intervertebral disc
What is the name given to the white ramus communicans which becomes embedded within the annulus fibrosus of the intervertebral disc?
the paradisiacal ramus communicans
How does the intervertebral disc attach to the vertebral body?
Sharpey’s fibers from the outer lamellae of the annulus fibrosus are firmly embedded into the epiphyseal rims of the adjacent vertebral bodies
In what regions of the vertebral column is the space formed between vertebral bodies by the intervertebral disc the greatest?
the cervical and lumbar regions
Which curve direction will be associated with the greatest space observed between vertebral bodies?
the lordotic or anterior curve
What traditionally either replaces or supports the posterior annulus fibrosus?
the posterior longitudinal ligament
What part of the thoracic spine is most susceptible to herniation?
the segments below T8
What is the popular theory of intra-abdominal disc to loading?
increasing the intra-abdominal cavity pressure will diminish the amount of resistance the intervertebral disc needs to generate by up to 50%
