Calculate the equilibrium membrane potential for Na* for an extracellular fluid concentration of 138 mM and anintracellular fluid concentration of 16 mM.Bereken die ewewigsmembraan potensiaal vir Na* vir 'n ekstrasellulêrevloeistof konsentrasie van 138 mM en 'nintrasellulêre vloeistof konsentrasie van 16 mM.a. -90 mV.b. -84 mV.C. -72 mv.d. -63 mV.e. +57 mV.

Membrane potential is ion is defined as the difference in electrical change across the cell…

Answered: Calculate the equilibrium membrane…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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In the Nernst equation [V = 62 log10 (Co / Ci)], the term Co represents: cell bio the intracellular concentration of calcium the extracellular concentration of potassium the extracellular concentration of sodium the intracellular concentration of potassium the membrane potential (in millivolts)
The concentration of potassium ions inside a nerve cell membrane is higher than the concentration of sodium ions outside the mem-brane, yet the inside of the membrane (where the cation concentra-tion is higher) is negative to the outside. Explain this observation in terms of permeability properties of the membrane.
Ion transporters are “linked” together—not physi-cally, but as a consequence of their actions. For example,cells can raise their intracellular pH, when it becomes tooacidic, by exchanging external Na+ for internal H+, usinga Na+–H+ antiporter. The change in internal Na+ is thenredressed using the Na+-K+ pump.A. Can these two transporters, operating together,normalize both the H+ and the Na+ concentrations insidethe cell?B. Does the linked action of these two pumps causeimbalances in either the K+ concentration or the mem-brane potential? Why or why not?
The resting membrane potential results fromA. uneven distribution of ions across the cell membrane only.B. differences in membrane permeability to Na+ and K+ onlyC. activity of the sodium/potassium pump only.D. uneven distribution of ions across the cell membrane, differences in membrane permeability to Na+ and K+, and sodium/potassium pump activity
Explain what is going on at sites A, B, C, D, F and G in relation to CHARGE (negative, positive, rising, falling) and open or closed Na+ and K+ ion channels +40 Voltage (mv) O -55 -70 Threshold B A 1 E D 2 3 Time (ms) F 4 G
In the situations described below, what is the free energy change if 1 mole of Na+ is transported across a membrane from a region where the concentration is 48 μM to a region where it is 110 mM? (Assume T=37∘C.) When the transport is opposed by a membrane potential of 70 mV.
what would the membrane potential be if the membrane became 10X more permeable to both sodium and chloride
I need help please
Under fully thawed conditions,what path will the low frequency current take and why?
The negatively charged intracellular environment and resulting resting membranepotential of neurons and muscle cells fundamentally develops because of:A. the presence of a high extracellular potassium concentration.B. the presence of negatively charged intracellular proteins.C. the high electron concentration found in the extracellular fluidsD. the presence of voltage-gated-sodium channells
Explain why a K+ channel does not allow Na+ or Ca2+ ions to pass through it – Na is the smallestwhile Ca is the largest.
For the ion concentrations in Table 12.1, calculate the equilibriumpotentials for each ion species in squid axons and in mammalianmuscle fibers.

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