thick filaments

thick filaments
bipolar myosin filaments, 12–14 nm in diameter and 1.6 μm in length, occurring in striated muscle; the term may also be used to denote filaments, often much shorter, occurring elsewhere. See also myofilament.

Medical dictionary. 2011.

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  • thick filaments — Bipolar myosin II filaments (12 14nm diameter, 1.6 m m long) found in striated muscle. Myosin filaments elsewhere are often referred to as ‘thick filaments’, although their length may be considerably less. The myosin heads project from the thick… …   Dictionary of molecular biology

  • filaments — See thick filaments, thin filaments, intermediate filaments, and microfilaments …   Dictionary of molecular biology

  • bipolar filaments — Filaments that have opposite polarity at the two ends; classic example is the thick filament of striated muscle …   Dictionary of molecular biology

  • intermediate filaments — A class of cytoplasmic filaments of animal cells so named originally because their diameter (nominally 10nm) in muscle cells was intermediate between thick and thin filaments. Unlike microfilaments and microtubules, the protein subunits of… …   Dictionary of molecular biology

  • muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… …   Universalium

  • Sliding filament model — Ratchet mechanism redirects here (it is the name given in some textbooks to the sliding filament mechanism). For the mechanical device, see Ratchet (device) The sliding filament theory describes a process used by muscles to contract. It was… …   Wikipedia

  • Myofibril — 1. Axon 2. Neuromuscular junction 3. Muscle fiber 4. Myofibril Latin myofibrilla MeSH …   Wikipedia

  • Sinosauropteryx — Animalia Sinosauropteryx Temporal range: Early Cretaceous, 124.6–122 Ma …   Wikipedia

  • Myofilament — Latin myofilamentum Code TH H2 …   Wikipedia

  • Sarcomere — A band redirects here. For other uses, see A band. Sarcomere Image of sarcomere Latin sarcomerum Code TH …   Wikipedia

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