Select one: a. Two K+ lons out and two Na+ ions into the cell b. Three Na+ lons out and two K+ ions Into the cell c. Thr

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Select one:
a. Two K+ lons out and two Na+ ions into the cell
b. Three Na+ lons out and two K+ ions Into the cell
c. Three K+ ions out and two Na+ lons into the cell
d. Two Na+ ions out and three K+ lons into the cell
2) Which of the following myelin proteins contain five ig-like domains?
Select one:
a. MOG
b. MBP
C. OMgp
d. MAG
3) How do energy-yielding substrates enter the brain?
Select one:
a. Through blood-brain barrier
b. Through brain ventricles
c. Through cerebellum
d. Through glia