The Journal of General Physiology
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The Journal of General Physiology, Vol 41, 1187-1203, Copyright © 1958 by The Rockefeller University Press

ARTICLE

EFFECTS OF POTASSIUM, SODIUM, AND AZIDE ON THE IONIC MOVEMENTS THAT ACCOMPANY ACTIVITY IN FROG NERVES

Tomoaki Asano 1 and W. P. Hurlbut 1

1 From The Rockefeller Institute for Medical Research

Stimulation of intact or desheathed frog sciatic nerves produced an increase in the sodium content and a decrease in the potassium content of this tissue. In desheathed preparations the magnitudes of the changes in ionic contents decreased as the concentration of the potassium in the bathing solution was increased, while changing the external sodium concentration produced small effects on the ionic shifts. During tetanization, the rate of decline of the compound action potential also decreased as the external potassium concentration increased. Eliminating the activity respiration with 0.2 mM azide did not greatly modify the changes in sodium and potassium distribution that accompanied activity in either intact or desheathed nerves.

Submitted on February 20, 1958


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A. L. Hodgkin
The Ionic Basis of Nervous Conduction
Science, September 11, 1964; 145(3637): 1148 - 1154.
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