XI. Intervertebral Disc: Innervation

Question 1

What part of the intervertebral disc is innervated?

Answer 1

the outer lamellae of the annulus fibrosus

Question 2

What are the types of receptor endings in the intervertebral disc?

Answer 2

nociceptors and proprioceptors

Question 3

What is the relationship between size of the intervertebral disc and receptor endings?

Answer 3

the larger the disc, the greater the variety of receptor endings

Question 4

What is the proposed function of receptor ending density in the anterior part of the intervertebral disc?

Answer 4

they provide feedback during extension

Question 5

What innervates the annulus fibrosus at the posterior part of the intervertebral disc?

Answer 5

the recurrent meningeal/sinu-vertebral/sinus vertebal nerve

Question 6

What forms the posterior neural plexus of the vertebral column?

Answer 6

the sinu-vertebral nerve (sinus vertebral nerve, recurrent meningeal nearve)

Question 7

What forms the anterior neural plexus of the vertebral column?

Answer 7

fibers from the ventral primary ramus

Question 8

What is the name given to the white ramus communicans which becomes embedded within the annulus fibrosus of the intervertebral disc?

Answer 8

the paradiscal ramus communicans