ON THE INTERACTION OF OUTFLOWING K IONS AND EXTERNAL Na IONS IN THE MEMBRANE OF SARTORIUS MUSCLE FIBERS OF FROGS

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概要

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• For living cell membrane, a stable dynamic ionic state across the membrane is required in order to maintain the intracellular electrical neutrality, Gibbs-Donnan's equilibration and the balance of osmotic pressure. When the outflux of K ions is discussed from these points of view, the potential gradient, the concentration gradient of K and the hydrodynamic pressure are assumed as the driving forces. Moreover, it is currently considered that K<SUP>+</SUP> efflux is passively controlled by the potential gradient which is a mirror of the concentration difference of K<SUP>+</SUP>. However, the present author (1, 2) obtained experimental results which contradict this conception.In this paper, the investigation of the ionic interrelationship between K<SUP>+</SUP> outflux and external sodium ions has been attempted in order to determine the detail of the passive outward movement of K ions.

• 久留米大学医学部 The Kurume Medical Journal 編集部の論文

著者

• Noda K.

  Department of Obstetrics and Gynecology Kinki University school of Medicine

• NODA KENICHI

  Department of Physiology, Kurume University School of Medicine

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