Ependymal -Correct Answer ✔circulates CSF with cilia
lining Brain cavities
Microglia -Correct Answer ✔immune cells of CNS
collect debris
phagotize
Schwann -Correct Answer ✔myelin in PNS
Satellite cells -Correct Answer ✔insulation in Soma (PNS)
Blood Brain Barrier -Correct Answer ✔between capillary and ECF
Astrocytes send signals to tighten
Pericytes induce formation
If cilia did not beat -Correct Answer ✔excess ECF causes brain to swell
Hydrocephalus -Correct Answer ✔water on brain
excess CSF
Reversal Potential -Correct Answer ✔Equilibrium; membrane potential that counteracts
the chemical gradient
K+ ion reversal potential and concentration -Correct Answer ✔More K+ ions in Cytosol
inside the cell than the ECF
(-88mv)
if membrane potential is -12 K+... -Correct Answer ✔ions moves out
if MP is -100 K+ ions... -Correct Answer ✔move in
Na+ concentration and reversal potential -Correct Answer ✔Larger concentration
outside of the cell
(+60 mv)
BIOL 252 Exam 1
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