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

W19/L2: Cells of the CNS Flashcards

1
Q

Why is grey matter grey?

A

It contains cell bodies

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2
Q

Why is white matter white?

A

It has lots of myelin

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3
Q

What is the cortex?

A

A 1cm thick region covering the brain

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4
Q

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

A

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

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5
Q

What structure forms the CSF?

A

The choroid plexus

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6
Q

Describe the ependymal cells

A

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

Not epithelium!

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7
Q

Where are the ependymal cells found?

A

Lining the ventricles and central canal of the spinal cord

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8
Q

What are the Nissl bodies?

A

RER + free ribosomes

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9
Q

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

A

Large pale nucleus

Nissl bodies

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10
Q

What are the glial cells?

A

Astrocytes
Oligodendrocytes
Schwann cells

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11
Q

Which cells help form the BBB?

A

Astrocytes

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12
Q

Which cells are responsible for myelination?

A

Oligodendrocytes & Schwann cells

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13
Q

Oligodendrocytes vs Schwann cells: Which is in the CNS?

A

Oligodendrocytes

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14
Q

Oligodendrocytes vs Schwann cells: Which is in the PNS?

A

Schwann cells

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15
Q

Oligodendrocytes vs Schwann cells: Which can wrap multiple axons?

A

Oligodendrocytes

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16
Q

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

A

Schwann cells

17
Q

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

A

Nodes of ranvier

18
Q

What are the immune cells of the nervous system?

A

Microglia

6. Neuro (33 decks)

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