Intervertebral disc; cartilaginous end plate & transition zone Flashcards
What is the thinnest part of the cartilage end plate?
the central part, over the nucleus pulposus
What part of the vertebral body will the cartilage end plate cover?
the cancellous bone at the top or bottom of the vertebral body
what is the principal type of collagen fiber within the cartilage end plate?
the type ii collagen fiber
What is the direction of collagen fibers within the cartilage end plate?
collagen fibers are aligned anterior to posterior
What is the attachment site for collagen fivers of the inner lamellae of the annulus fibrosus?
the cartilaginous end plate
What cell type is associated with the cartilage end plate?
chondrocytes
What part of the intervertebral disc is the “growth plate”?
the transition zone
What is the area of maximum metabolic activity in the intervertebral disc?
the transition zone
What part of the intervertebral disc will exhibit constant remodeling?
the transition zone
What part of the cervical intervertebral disc is highly innervated?
the middle third of the annulus fibrosus
What are the types of receptor endings in the intervertebral disc?
nociceptors and proprioceptors
What is the relationship between size of the intervertebral disc and receptor endings?
the larger the disc, the greater the variety of receptor endings
What part of the intervertebral disc is innervated by the recurrent meningeal/sinu-vertebral/sinus vertebral nerve?
the outer lamellae of the annulus fibrosus 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 forms the lateral neural plexus of the vertebral column?
fibers from the ventral primary ramus, fibers from the white ramus communicans, fibers from the paradiscal ramus communicans, fibers from the gray ramus communicans
