Factor which influence
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What 2 factors influence Resting Potential? | Ionic Concentration, Ionic Permeability
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| What are 2 ways Ionic Concentration can be changed? | 1. changing Voltage 2. changing Electrochemical Equilibrium
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| What factor allows for greater permeability of Ions through a mambrane? | open Gates
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| What is the definition of AP? | a brief Depolarization, followed by a quick Repolarization = Electrical Impulse
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| What causes AP Depolarization? | influx of Na+ (in)
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| What causes AP Repolarization? | efflux of K+ (out)
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| What structure maintains the Resting Potential? | Na/K Exchange Pump - requires ATP
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| What is the ratio for Active Transport to maintain Resting Potential? | 3 Na+ OUT for every 2 K+ IN
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| What structure maintains the Resting Potential? | Na/K Exchange Pump
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| Why is the Exchange Pump necessry? | Na+ and K+ moving across membrane changes voltage - pump REGULATES charge
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| Whenever Na+ and K+ move across the membrane what happens to the membrane? | concentration gradient is reduced becoming Depolarized
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| What would be the result if the membrane never returned to RP? | no RP --> no ATP --> no Na/K Pump --> No AP sensory/motor --> death
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| What would be the result of an increase in Diffusional Force? | ^ DF --> ^ Equilibrium Potential ^ Resting Potential
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Created by:
Kristel
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