There is no inward current at a membrane potential of +65mV because: The membrane potential is near or at the equilibrium potential for Na+ The membrane potential is near or at the equilibrium potential for neither Na+ or K+ The membrane potential is near or at the equilibrium potential for both Na+ and K+ The membrane potential is near or at the equilibrium potential for K+

There is no inward current at a membrane potential of +65mV because: The membrane potential is near or at the equilibrium potential for Na+ The membrane potential is near or at the equilibrium potential for neither Na+ or K+ The membrane potential is near or at the equilibrium potential for both Na+ and K+ The membrane potential is near or at the equilibrium potential for K+

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 17RE

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Conformational changes in channel proteins brought about by voltage changes are responsible for opening and closing Na+ and K+ gates during the generation of an action potential. (True or false?)
Draw and label an action potential, indicating the ion movements responsible for the rising phase and the falling phase.
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The reason that resting membrane potential (RMP) is closer to the equilibrium potential of K+ (EK) rather than that of Na+ (ENa) is that… Group of answer choices -The driving force for Na+ ions at rest is high. -The membrane is much more permeable to Na+ ions than K+ ions at rest. -Only K+ ions have a concentration gradient, Na+ ions have approximately equal intracellular and extracellular concentrations -The membrane is much more permeable to K+ ions than Na+ ions at rest.
Calculate: The equilibrium potential for potassium at room temp The equilibrium potential for sodium at room temp Resting membrane potential of this neuron at room temperature
What is the equilibrium membrane potential due to Na+ ions if the extracellular concentration of Na+ ions is 154 mM and the intracellular concentration of Na+ ions is 27 mM at 20 ∘C ? Please answer asap and in short and content should not be palgarised please
If: membrane potential=-70mV, ENa=+60mV, and Ex=-90mV, consider which directions Na+ and K+ will leak across the membrane. If both ions are crossing the membrane, what is the most important factor in determining whether membrane potential will become more positive or more negative?
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When the net charge on either side of the plasma membrane is zero, what else is true? There is an equal number of K+ ions on each side of the plasma membrane. The K+ leak channels are open. The electrochemical potential across the membrane is zero. The resting membrane potential is between -20 mV and -200 mV.
The membrane potential caused by differences in ions across the plasma membrane of an electrically excitable cell (when not stimulated) is called: action potential resting membrane potential graded potential local potential
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