The chloride permeability of frog sartorius
نویسندگان
چکیده
منابع مشابه
Studies of tissue permeability. VIII. The effect of anaerobiosis on glucose uptake in frog sartorius muscle.
Previous investigations of the effect of anaerobiosis on the metabolism of glucose have been carried out with mammalian tissues. Walaas and Walaas (1) found no difference in the rate of glucose uptake by rat hemidiaphragms incubated in Ringerphosphate solution with either oxygen or nitrogen as the gas phase. The addition of insulin exerted an effect on glucose uptake only during the first few m...
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Local movement was recorded in tetanically contracting frog sartorius muscle to estimate the nonuniformity in the distribution of compliance in the muscle preparation and the compliance that resides in the attachments of the preparation to the measuring apparatus. The stimulated muscle was also subjected to rapid length changes, and the local movements and tension responses were recorded. The r...
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Electron microscopy shows that the transverse tubular system of frog sartorius swells in Ringer fluid in which NaCl is partially replaced by sucrose (sucrose isotonic solutions). At constant tonicity, the degree of swelling is roughly proportional to the decrease in ionic strength and to the sucrose concentration of the bathing solution. Swelling is time-dependent and reversible within 2 hr. Th...
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Upon excitation of a muscle with two stimuli and variation of the interval between them up to the end of the period of full mechanical fusion, an increment of the isometric heat over that found in a single twitch is obtained. This is a good approximation to the activation heat, directly at 0 degrees C, or after certain corrections which become important at higher temperature. The activation hea...
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Caffeine increases resting calcium influx approximately threefold in normally polarized and in potassium-depolarized fibers of frog sartorius muscles. It does not affect the transient rapid increase in calcium influx that occurs at the beginning of a potassium depolarization. Calcium outflux in Ringer's solution, in zero calcium Ringer's solution, and in zero calcium Ringer's solution plus 0.00...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1965
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1965.sp007539