Cells of the CNS Flashcards
Lecture 2 Module 2
1
Q
What percentage of cells in the brain are neurons and glia?
A
10% neurons, 90% glia
2
Q
Which glial cell makes myelin in the CNS?
A
Oligodendrocytes
3
Q
What percentage of brain volume do glial cells make up?
A
50%
4
Q
What do astrocytes do?
A
Form the BBB
5
Q
how do oligodendrocytes myelinate neurons?
A
Wrap their cell membrane around the cell
6
Q
Can oligodendrocytes myelinate more than one neuron?
A
Yes, one oligodendrocyte myelinates a small part of many different neurons.
7
Q
Is one neuron myelinated by multiple oligodendrocytes?
A
Yes, as each only do a small section needs lots of oligodendrocytes to do the whole axon
8
Q
What do microglia do?
A
Clean up debris and eat dead neurons
