Glia

Question 1

Where are fibrous astrocytes found and what do they do?

Answer 1

white matter

support axons/nodes of Ranvier

Question 2

Where are protoplasmic astrocytes found and what do they do?

Answer 2

grey matter

envelop synapses

Question 3

What is astrogliosis?

Answer 3

glial scar formation after CNS injury

Question 4

What do ramified microglia look like and what do they do?

Answer 4

multiple extended processes

passive, surveying

Question 5

What do amoeboid microglia look like and what do they do?

Answer 5

retracted processes

activated

Question 6

What are satellite cells and where are they found?

Answer 6

astrocytes of PNS

dorsal root ganglion

Question 7

What is resting membrane potential? Is the inside or outside of the cell more negative and why?

Answer 7

-70 mV

inside more negative (K+ and proteins)

Question 8

What does the ATPase pump do and how many of each molecule does it transfer?

Answer 8

maintain resting membrane potential as well as the leaky K+ channels
REMOVES 3 NA+ AND TAKES IN 2 K+