Accession Number:

AD0296448

Title:

CESIUM-SODIUM INTERACTIONS ON X-RAY DEPOLARIZATION OF MUSCLE FIBERS

Descriptive Note:

Corporate Author:

EMORY UNIV ATLANTA GA

Personal Author(s):

Report Date:

1962-12-01

Pagination or Media Count:

16.0

Abstract:

Cesium ions in bathing fluid produce a depolarization of frog sartorius muscle fibers independent of the depolarization produced by irradiation. The fractional depolarization produced by x-rays is independent of external cesium concentration, but proportional to external sodium concentration, and is explained as the result of an increased sodium ion permeability. Cesium depolarization 20mMCs in non-irradiated fibers increases with decreasing sodium concentration, indicating a specific sodium-cesium interaction in the membrane. A simple concentration-cell potential explanation for the cesium effects is not yet adequate.

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE