Neuroglia

Question 1

Which neuroglia help absorb excess neurotransmitters from the extracellular milieu?

Answer 1

Astrocytes

Question 2

How does glucose cross the BBB?

Answer 2

Insulin-independent transporter GLUT 1

Question 3

Which glial cells regulated cerebrospinal fluid?

Answer 3

Ependymal cells

Question 4

Which glial cells regulate blood flow and synaptic communication?

Answer 4

Astrocytes

Question 5

Which neuroglia are quite stable over long periods of time?

Answer 5

Ependymal cells and astrocytes (Astrocytic processes change from fine and filamentous to thick and hypertrophic with injury. Astrocytes do not migrate to the glial scar, but form part of it, if nearby.)

Question 6

Which neuroglia are the first responders?

Answer 6

Microglia

Question 7

Which neuroglia remove unnecessary synapses in the visual system?

Answer 7

Microglia

Question 8

Oligodendrocyte precursor cells…

Answer 8

…majority of myelination forms by young adulthood, but the precursor cells persist throughout life
…continue to divide in adulthood
…receive direct input from neurons (excitable, but don’t fire action potentials)
…very dynamic