Structure and Function in Vertebrate Skeletal Muscle
نویسندگان
چکیده
منابع مشابه
Na channel distribution in vertebrate skeletal muscle
The loose patch voltage clamp has been used to map Na current density along the length of snake and rat skeletal muscle fibers. Na currents have been recorded from (a) endplate membrane exposed by removal of the nerve terminal, (b) membrane near the endplate, (c) extrajunctional membrane far from both the endplate and the tendon, and (d) membrane near the tendon. Na current densities recorded d...
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A n a t o m i c a l O b s e r v a t i o n s a n d F u n c t i o n a l I m p l i c a t i o n s The sarcoplasmic reticulum (SR) of striated muscle (1) is differentiated into certain discrete mor-phologic specializations, the couplings, which are presumed to be prominently involved in the process of excitation-contraction coupling (2, 3). The coupling is composed of sarcolemma and junc-tional sarc...
متن کاملNa Channel Distribution in Vertebrate Skeletal Muscle
The loose patch voltage clamp has been used to map Na current density along the length of snake and rat skeletal muscle fibers . Na currents have been recorded from (a) endplate membrane exposed by removal of the nerve terminal, (b) membrane near the endplate, (c) extrajunctional membrane far from both the endplate and the tendon, and (d) membrane near the tendon . Na current densities recorded...
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Zebrafish muscles were examined at an early developmental stage (larvae 5-7 d). Using aluminum clips, preparations (approximately 1.5 mm length, 150 microm diameter) were mounted for force registration and small angle x-ray diffraction. Sarcomeres were oriented mainly in parallel with the preparation long axis. Electrical stimulation elicited fast and reproducible single twitch contractions. Le...
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The fast-twitch extensor digitorum longus (EDL) and the slow-twitch soleus muscle of the rat consist of heterogeneous fiber populations. EDL muscle fibers differ in size, mitochondrial content, myoglobin concentration, and thickness of the Z line. The sarcoplasmic reticulum, on the other hand, is richly developed in all fibers, with only small variation. Myofibrils are clearly circumscribed at ...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1989
ISSN: 0003-1569
DOI: 10.1093/icb/29.1.221