a) A certain mammalian species (37 °C body temperature) has nerve cells with a resting potential of -80 mV. The intracellular concentration of Potassium is = 150 mMol/L. Permeabilities of other ions are negligible compared to [K]I Potassium. A drug is administered to the subject, which opens up Potassium channels. The resulting leakage in Potassium causes the internal Potassium concentration to drop to [K]1= 55 mMol/L (External Potassium concentration does not change). Determine, if an action potential will result if the excitation threshold is -60 mV.

a) A certain mammalian species (37 °C body temperature) has nerve cells with a resting potential of -80 mV. The intracellular concentration of Potassium is = 150 mMol/L. Permeabilities of other ions are negligible compared to [K]I Potassium. A drug is administered to the subject, which opens up Potassium channels. The resulting leakage in Potassium causes the internal Potassium concentration to drop to [K]1= 55 mMol/L (External Potassium concentration does not change). Determine, if an action potential will result if the excitation threshold is -60 mV.

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 1SQE: Answer the following questions regarding conduction of action potentials using the velocities given...

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