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Membrane Physiology
carriers
use ion gradient as energy to drive transport
pumps
establish electrochemical gradient
general
chemiosmotic cycle
a symporter carrier brings in two chemicals
one draws in water when entering
a pump is then turned on to flush out the one that draws water
this prevents over hydration
epithelial transport
apical - surface exposed to lumen
basolateral - the side towards interstitial space and blood
process of transport of substrates through apical surface out basolateral side
that process through top symporter that drew in Sodium is then pumped out
potassium is balanced through a channel and leakage
channels
regulate membrane permeability
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