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What is the role of the Nernst equation in determining membrane potential?
What is the role of the Nernst equation in determining membrane potential?
It tells us that EK is -80 mV when K+ is concentrated twentyfold on the inside of a cell.
Explain how ionic concentration gradients are established in a neuronal membrane.
Explain how ionic concentration gradients are established in a neuronal membrane.
Ionic concentration gradients are established by the actions of ion pumps, particularly the sodium-potassium pump and the calcium pump.
Which ion is more concentrated on the inside of a cell, potassium (K+) or sodium (Na+)?
Which ion is more concentrated on the inside of a cell, potassium (K+) or sodium (Na+)?
Potassium (K+) is more concentrated on the inside of a cell.
What is the ratio of K+ concentration inside to outside the cell?
What is the ratio of K+ concentration inside to outside the cell?
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How does the sodium-potassium pump function in maintaining ionic balance?
How does the sodium-potassium pump function in maintaining ionic balance?
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What is the membrane potential achieved for Na+ at body temperature?
What is the membrane potential achieved for Na+ at body temperature?
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Explain the significance of the calcium pump in cellular neurophysiology.
Explain the significance of the calcium pump in cellular neurophysiology.
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What is the ratio of Cl- concentration outside to inside the cell?
What is the ratio of Cl- concentration outside to inside the cell?
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What is the membrane potential achieved for Cl- at body temperature?
What is the membrane potential achieved for Cl- at body temperature?
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How does the sodium-potassium pump utilize the energy released from ATP breakdown?
How does the sodium-potassium pump utilize the energy released from ATP breakdown?
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