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BIPN 100 (Bloodgood UCSD) Questions And Answers Rated A+ New Update Assured Satisfaction
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Steps for an Action Potential - Depolarizing stimulus, if threshold is met - Na+ and K+ channels begin to open, Na+ enters the cell and depolarizes it, Na+ channels close and K+ channels open fully, K+ exits the cell until it is hyperpolarized, K+ channels close, cell returns to resting membrane ...

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  • September 5, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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BIPN 100 (Bloodgood UCSD)
Steps for an Action Potential - Depolarizing stimulus, if threshold is met - Na+ and K+ channels
begin to open, Na+ enters the cell and depolarizes it, Na+ channels close and K+ channels open fully, K+
exits the cell until it is hyperpolarized, K+ channels close, cell returns to resting membrane potential




Membrane permeability of molecules (most to least) - Lipophilic, small & non-polar, small & polar,
large & polar, charged



Sodium-potassium pump function - Pump 3 Na out, and 2 K in



SGLT (Sodium-glucose linked transporter) function - Glucose is transported into the cell using the
Na gradient established by the sodium-potassium pump



Typical membrane potential - -70 mV



Equation for the Equilibrium Potential of an Ion - Nernst Equation



Equilibrium Potential for K+ - -90mV

Three Fluid Compartments - intracellular, interstitial, plasma

Equilibrium Potential for Cl- - -63mV



Equilibrium Potential for Ca2+ - +122mV




Regions along axons during an AP - Refractory region, active region, inactive region

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