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Phsyiology Week 5

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Question
Answer
What is the importance of resting membrane potential?   show
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show The difference in the amount of electrical charge inside and outside the cell.  
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What is the most concentrated cation in extracellular fluid?   show
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show Potassium  
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What is the resting membrane potential? on exam   show
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show sodium potassium pump, Passive diffusion of sodium-potassium Entrapment of proteins  
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show The concentration gradients of different ions across the membrane and the permeability of the membrane to those ions  
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What happens to the resting membrane potential of a cell if the extracellular K+ concentration increases?   show
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show If na+ goes inside cell, -ve ion moves out therefore it becomes more positive.  
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Depolirization   show
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Repolarization   show
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Hyperpolirization   show
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show Decrease in membrane potential  
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What causes changes in membrane potential & creates electrical signals?   show
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What is the resting membrane potential difference?   show
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Electrical Gradient   show
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show The electrochemical gradient for that ion.  
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show The membrane potential that exactly opposes the concentration gradient of an ion is known as the equilibrium potential. The equilibrium potential for any ion can be calculated using the Nerst equation  
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Charges of outside + inside cell   show
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