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Flashcards in Development of the CNS Deck (11)
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1
Q

Name some derivatives of neural crest cells

A

Schwann cells
Glial cells
Adrenal medulla
Melanocytes

2
Q

What are the 3 primary brain vesicles formed following closure of neural tube?

A
  1. Prosencephalon (forebrain)
  2. Mesencephalon (midbrain)
  3. Rhombencephalon (hindbrain)
3
Q

Name regulatory structures in the brain

A

left and right thalamus
Cerebellum
Hypothalamus

4
Q

At week 5 the 3 primary brain vesicles divide further. Name these divisions

A

Prosencephalon:

  1. Telencephalon
  2. Diencephalon

Mesencephalon remains the same

Rhombencephalon:

  1. Metencephalon- pons and cerebellum
  2. Myelencephalon- Medulla
5
Q

What are the 5 regions of the spinal cord?

A
Cervical
Thoracic
Lumbar
Sacral
coccygeal
6
Q

How many vertebrae in cervical spine?

A

7

7
Q

How many vertebrae in thoracic spine?

A

12

8
Q

How many vertbrae in lumbar spine?

A

5

9
Q

How many vertebrae in sacral spine?

A

5

10
Q

what are neuroblasts?

A

Primitive nerve cells that form the mantle layer

11
Q

What does the marginal layer contain?

A

Nerve fibres emerging from neuroblasts in the mantle layer