Perilymphatic potassium changes and potassium homeostasis in isolated semicircular canals of the frog.
نویسندگان
چکیده
منابع مشابه
On the Sodium and Potassium Balance of Isolated Frog Muscles.
perithecial parent, the possibility that something is being transmitted through the cytoplasm is immediately suggested. However, with so little information available as to the possible nature of tfie defect whiph produces the poky phenotype, conclusions regarding the mechanism of its transmission would necessarily be highly speculative in nature. It seems preferable, for the present, to look up...
متن کاملStreptomycin blocks the afferent synapse of the isolated semicircular canals of the frog.
This study aimed to define the acute electrophysiological effects of the perilymphatic perfusion of streptomycin in the sensory apparatus of the semicircular canals of the frog. The ampullary DC potential, the vestibular nerve multiunit discharge, the nerve DC potential and the unitary EPSP activity were recorded in isolated semicircular canals of the frog (Rana esculenta L). The results demons...
متن کاملThe Amplitude and Inactivation Properties of the Delayed Potassium Currents Are Regulated by Protein Kinase Activity in Hair Cells of the Frog Semicircular Canals
In hair cells dissected from the frog crista ampullaris, the combination of a calcium-dependent (IKCa) and a purely voltage-dependent component (IKV) gives rise to the delayed potassium current complex (IKD). These currents have been recently reported to display slow depolarization-induced inactivation and biphasic inactivation removal by hyperpolarization. The amplitude and inactivation kineti...
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: 1990
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1990.sp018308