Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Question
Chapter 32, Problem 14P
Interpretation Introduction
Interpretation:
The actual transmembrane potential difference for the neuron needs to be determined.
Concept Introduction :
The relative permeability is defined as the actual permeability of a specific fluid at a specific saturation and the absolute permeability of that fluid at saturation ratio If a rock contains a single fluid, the relative permeability will be 1.0.
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Calculate the equilibrium membrane potentials to be expected across a membrane at 37 ∘C, with a NaCl concentration of 0.50M on the "right side" and 0.08 M on the "left side", given the following conditions. In each case, state which side is (+) and which is (−).
(a)Membrane permeable only to Na+.
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Nernst (equilibrium)
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0.07
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K*
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4
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Ca**
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1.5
4
120
D) If during the generation of an action potential in the skeletal muscle cell the membrane potential
approaches +65 mV, membrane permeability for which ion likely plays a major role in membrane
depolarization? Explain your choice.
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