Intervertebral Disc: Classification & Embryology Flashcards Preview

Spinal Final Exam > Intervertebral Disc: Classification & Embryology > Flashcards

Flashcards in Intervertebral Disc: Classification & Embryology Deck (10)
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1
Q

Based on histology, what is the classification of the intervertebral disc?

A

A cartilaginous (amphiarthrosis) symphysis

2
Q

What are the divisions of the embryonic somite?

A

Sclerotome
Myotome
Dermatome

3
Q

What structure is formed following migration of sclerotomes to surround the notochord?

A

Perichordal Blastema

4
Q

What is formed within the perichordal blastema between the sclerotomites?

A

Intrasclerotomal Fissure or Fissure of von Ebner

5
Q

What does the intrasclerotomal fissure or fissure of von Ebner become?

A

Perichordal Disc

6
Q

What will the dense sclerotomite become?

A

Upper part of the vertebral segment forming below

7
Q

What structures forms following migration and subsequent mixing of the sclerotomites?

A

Vertebral Blastema

8
Q

What part of the intervertebral disc will the notochord form?

A

Nucleus Pulposus

9
Q

What part of the intervertebral disc will the perichordal disc form?

A

Annulus Fibrosus

10
Q

What is the earliest indicator of the position of the adult intervertebral disc?

A

Intrasclerotomal Fissure or Fissure of von Ebner

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