sliding filament theory
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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
sliding filament hypothesis — slid·ing filament hypothesis slīd iŋ n a theory in physiology holding that muscle contraction occurs when the actin filaments next to the Z line at each end of a sarcomere are drawn toward each other between the thicker myosin filaments more… … Medical dictionary
Myofibril — 1. Axon 2. Neuromuscular junction 3. Muscle fiber 4. Myofibril Latin myofibrilla MeSH … Wikipedia
biophysics — biophysical /buy oh fiz i keuhl/, adj. biophysically, adv. biophysicist /buy oh fiz euh sist/, n. /buy oh fiz iks/, n. (used with a sing. v.) the branch of biology that applies the methods of physics to the study of biological structures and… … Universalium
Huxley , Hugh Esmor — (1924–) British molecular biologist Huxley (no relation to T.H. Huxley or any of his descendants) was born at Birkenhead near Liverpool. He studied physics at Cambridge University where he obtained his PhD in 1952 after wartime research on the… … Scientists
striated muscle — n muscle tissue that is marked by transverse dark and light bands, that is made up of elongated fibers, and that includes skeletal and usu. cardiac muscle of vertebrates and most muscle of arthropods compare SMOOTH MUSCLE, VOLUNTARY MUSCLE * * *… … Medical dictionary
striated muscle — a tissue comprising the bulk of the body s musculature. It is also known as skeletal muscle, because it is attached to the skeleton and is responsible for the movement of bones, and voluntary muscle, because it is under voluntary control.… … The new mediacal dictionary
Tropomyosin — is an actin binding protein that regulates actin mechanics. It is important, among other things, for muscle contraction. Tropomyosin, along with the troponin complex, associate with actin in muscle fibers and regulate muscle contraction by… … Wikipedia
Huxley, Hugh Esmor — ▪ British biologist born Feb. 25, 1924, Birkenhead, Cheshire, Eng. English molecular biologist whose study (with Jean Hanson) of muscle ultrastructure using the techniques of X ray diffraction and electron microscopy led him to propose the… … Universalium
cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… … Universalium
