Frog muscle fibers bear a larger fraction of passive muscle tension than mouse fibers
نویسندگان
چکیده
منابع مشابه
Calcium-Activated Tension of Skinned Muscle Fibers of the Frog
The influence of MgATP on the Ga(++)-activated isometric tension of skinned frog muscle fibers was examined in solutions containing: Mg(++) = 5 mM, creatine phosphate (CP) = 14.5 mM, creatinephosphokinase (CPK) = 1 mg/ml, total EGTA = 7 mM, CaCl(2), KCl, imidazole >/= 20 mM so that ionic strength = 0.15, pH = 7.00, and MgATP = 2 mM, 0.1 mM, or 20 microM. CP and CPK were necessary for these expe...
متن کاملTension in Isolated Frog Muscle Fibers Induced by Hypertonic Solutions
The effect of hypertonic solutions on the tension of isolated twitch muscle fibers of the frog has been investigated. Increased tonicity up to about 1.7 times normal (1.7 T) caused a very small, graded, maintained tension increase. Above about 1.7 T a large, transient contracture response was superimposed on the small tension. The contracture response was graded with tonicity and reached a maxi...
متن کاملTendon Transfer Surgery Increases Passive Tension of Muscle, Muscle Fiber Bundles, and Muscle Fibers
Introduction: Muscles can adapt to altered length change by increasing or decreasing serial sarcomere number [1]. The functional result of this adaptation is for the muscle to work on or around optimal sarcomere length. If this finding applies to muscles after tendon transfer surgery, this would be desirable, as intraoperative measurements reveal that transferred muscles may be overstretched to...
متن کاملLongitudinal impedance of single frog muscle fibers
The longitudinal impedance of single skeletal muscle fibers has been measured from1 to 10,000 Hz in an oil gap apparatus which forces current to flow longitudinally down the fiber. The impedance observed is purely resistive in some fibers from the semitendinosus muscle and in two fibers from the sartorius muscle. In other fibers from the semitendinosus muscle a small phase shift is observed. Th...
متن کاملLongitudinal Impedance of Skinned Frog Muscle Fibers
Longitudinal impedance of skinned muscle fibers was measured with extracellular electrodes and an oil gap method in which a central longitudinal section of fiber is insulated by oil while the ends of the fiber are bathed in conducting pools of relaxing solution. Intact single fibers were isolated from frog semitendinosus muscle and the sarcolemma removed either by mechanical or chemical methods...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2018
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.182089