W19/L2: Cells of the CNS Flashcards Preview

6. Neuro > W19/L2: Cells of the CNS > Flashcards

Flashcards in W19/L2: Cells of the CNS Deck (18):
1

Why is grey matter grey?

It contains cell bodies

2

Why is white matter white?

It has lots of myelin

3

What is the cortex?

A 1cm thick region covering the brain

4

How many layers are there in the cortex and what are they due to?

6 layers caused by differences in densities of the cell types in each

5

What structure forms the CSF?

The choroid plexus

6

Describe the ependymal cells

Low columnar or cuboidal cells, sometimes with cilia on their apical surface.

Not epithelium!

7

Where are the ependymal cells found?

Lining the ventricles and central canal of the spinal cord

8

What are the Nissl bodies?

RER + free ribosomes

9

Neurons need to make lots of protein. How is this evdienced in histology?

Large pale nucleus
Nissl bodies

10

What are the glial cells?

Astrocytes
Oligodendrocytes
Schwann cells

11

Which cells help form the BBB?

Astrocytes

12

Which cells are responsible for myelination?

Oligodendrocytes & Schwann cells

13

Oligodendrocytes vs Schwann cells: Which is in the CNS?

Oligodendrocytes

14

Oligodendrocytes vs Schwann cells: Which is in the PNS?

Schwann cells

15

Oligodendrocytes vs Schwann cells: Which can wrap multiple axons?

Oligodendrocytes

16

Oligodendrocytes vs Schwann cells: Which can only wrap one axon?

Schwann cells

17

What are the names of the gaps in the myelin sheath?

Nodes of ranvier

18

What are the immune cells of the nervous system?

Microglia