Electrical activity and intracellular sodium concentration in frog muscle
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چکیده
منابع مشابه
Intracellular Sodium Concentration and Activity Coefficient in Single Barnacle Muscle Fibers
Dear Sir: The comments on my paper (Sodium and potassium fluxes in isolated barnacle muscle fibers. referred to me for reply. At issue is the extent to which the extracellular sodium present in the surface invaginations of single barnacle muscle fibers can make the intracellular activity
متن کاملThe Intracellular Concentration and Activity of Sodium in Giant Barnacle Muscle Fibers
Dear Sir: The existence of sodium binding or compartmentalization in single muscle fibers from giant barnacles was the basis for two recent letters in this Journal (McLaughlin, 1968; Brinley, 1968 b). Evidence for sodium binding from this laboratory is criticized by Brinley (1968 a, see Discussion) because our analytic value for total internal sodium concentration is higher than values obtained...
متن کاملIntracellular Electrical Potentials in Frog Skin
The influence of changes in ionic composition of the bathing solutions on intracellular electrical potentials in frog skin has been examined. When the skin bathed in SO(4) Ringer's solution is penetrated with a microelectrode two approximately equal potential jumps were frequently observed and most experiments were carried out with the electrode located between these steps. Substitution of Cl f...
متن کاملSodium and Potassium in Frog Muscle*
The potassium content of muscle fibers depends, in part, upon the potassium concentration of the external medium (Fenn and Cobb, 1934). In tissues intact in the body, it has been shown that sodium enters the fibers as potassium leaves, either because of low potassium in the blood (Heppel, 1939, 1940) or because of activity or fatigue (Fenn, 1938). Such findings suggest that the normal accumulat...
متن کاملSodium and Potassium in Frog Muscle*
The potassium content of muscle fibers depends, in part, upon the potassium concentration of the external medium (Fenn and Cobb, 1934). In tissues intact in the body, it has been shown that sodium enters the fibers as potassium leaves, either because of low potassium in the blood (Heppel, 1939, 1940) or because of activity or fatigue (Fenn, 1938). Such findings suggest that the normal accumulat...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1953
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1953.sp004940