neurocytology

Question 1

myelin-axons are found at

Answer 1

white matter

Question 2

staining of the nucleus and cytoplasm

Answer 2

H&E

Question 3

staining of nucleus, rough endoplasmic reticulum

Answer 3

Nissl

Question 4

signal transmission is

Answer 4

directional

Question 5

astroglia are especially important due to their role in

Answer 5

uptake of glutamate through excitatory a.a. transporters (EAATs)

Question 6

astroglia are ______ excitable and very _____ resistance

Answer 6

astroglia are non-electrically excitable, and very low input-resistance

Question 7

Tripartite synapse

Answer 7

the relationship between the presynaptic and postsynaptic cells and how astrocytes are close to them.

they are the ones that play a role with taking up glutamate

Question 8

how do astrocytes respond to synaptic signals

Answer 8

Calcium excitability

Question 9

Glutamate-Glutamine cycle

Answer 9

this cycle explains how glutamate is taken up by the astrocytes and then converted to Glutamine which then can be recycled into Glutamate again in the presu=ynaptic cells

Question 10

Astrocytes become _______ to form Glial scars in injury

Answer 10

astrocytes become GFAP+ to form Glial scars

Question 11

true or false:

certain reactive astroglia are toxic and are able to induce cell death by secreting toxic factors

Answer 11

true

Question 12

major source of brain glioma

Answer 12

astrocytoma

Question 13

microglia functions

Answer 13

surveillance
release of cytokines  following activation
cluster around amyloid plaques
phagocytosis
high motility

Question 14

APOE4

Answer 14

most common glia gene for alzheimer;s and it has a medium risk

Question 15

PSEN and APP

Answer 15

are rare glia genes connected to alzheimers and it carries a high risk

Question 16

oligodendrocytes are involved with myelin formation in the

Answer 16

CNS

Question 17

schwann cells are invovled in Myelin formation in the

Answer 17

PNS