Discrete sarcomere length distribution in skeletal muscle
نویسندگان
چکیده
منابع مشابه
The Sarcomere Length-Tension Relation in Skeletal Muscle
I N T R O D U C T I O N T e n s i o n d e v e l o p m e n t d u r i n g an i s o m e t r i c t e t a n u s in ske le ta l musc le occu r s in t h r e e d i s t inc t phases : t en s ion ini t ia l ly r ises r a p i d l y , t h e n c l imbs m o r e s lowly, a n d f ina l ly r e a c h e s a p l a t e a u which lasts m a n y s e c o n d s . T h i s t i m e c o u r s e is o b s e r v e d d u r i n ...
متن کاملThe sarcomere length-tension relation in skeletal muscle
Tension development during isometric tetani in single fibers of frog semitendinosus muscle occurs in three phases: (a) in initial fast-rise phase; (b) a slow-rise phase; and (c) a plateau, which lasts greater than 10 s. The slow-rise phase has previously been assumed to rise out of a progressive increase of sarcomere length dispersion along the fiber (Gordon et al. 1966. J. Physiol. [Lond.]. 18...
متن کاملQuantification of sarcomere length distribution in whole muscle frozen sections.
Laser diffraction (LD) is a valuable tool for measuring sarcomere length (Ls), a major determinant of muscle function. However, this method relies on few measurements per sample that are often extrapolated to whole muscle properties. Currently it is not possible to measure Ls throughout an entire muscle and determine how Ls varies at this scale. To address this issue, we developed an actuated L...
متن کاملIntraoperative single-site sarcomere length measurement accurately reflects whole-muscle sarcomere length in the rabbit.
PURPOSE To compare single-site intraoperative sarcomere length values with sarcomere lengths measured from systematic sampling of the entire transferred muscle. METHODS The tendon of the rabbit second toe extensor muscle was transposed to the ankle extensor retinaculum under levels of stretch over the sarcomere length range of about 2.5 microm to about 4.0 microm. Intraoperative sarcomere len...
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The sarcomere length non-uniformity theory (SLNT) is a widely accepted explanation for residual force enhancement (RFE). RFE is the increase in steady-state isometric force following active muscle stretching. The SLNT predicts that active stretching of a muscle causes sarcomere lengths (SL) to become non-uniform, with some sarcomeres stretched beyond actin-myosin filament overlap (popping), cau...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1982
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(82)84695-x