The effect of changes in muscle length on post-tetanic isometric twitch tension potentiation and myosin P-light chain phosphorylation was studied at 23ยฐC in the mouse extensor digitorum longus muscle. The length-tension relationship was determined for the same muscles after a 30 min period of quiesc
Shape and Length of Myosin Heads and Radial Compressive Forces in Muscle
โ Scribed by Jean-Emile Morel; Zalika Merah
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 223 KB
- Volume
- 184
- Category
- Article
- ISSN
- 0022-5193
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โฆ Synopsis
Irrespective of the exact shape and length of myosin heads, it is shown that radial compressive forces occur in contracting muscle, which tend to bring the myofilaments closer to each other. This is in contradiction with common observation: a muscle that shortens swells laterally. The presence of these forces is model-dependent and they appear only in the case of the traditional concepts of force generation. Here we present an overview and a historical account of the problem.
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