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actin and myosin.
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The sliding filament model of contraction involves .?
The sliding filament model of contraction involves actin filaments overlapping myosin filaments.
Physical evidence that supports the sliding filament theory of muscle contraction includes?
decreased width of the H band during contraction
What is in the center of a light bulb?
filament
What is the protein filament that slides inward toward the middle of a sarcomere during a muscle contraction?
Actin
Which myofilaments actually do the pulling during the sliding filament model of muscle contraction?
thick filaments
Who proposed the sliding filament theory?
The sliding filament theory of muscle contraction was proposed by Andrew Huxley and Rolf Niedergerke in 1954.
In muscle contraction calcium apparently acts to?
Muscle contraction is regulated by calcium ions, which will change thin filament into an activated state by binding to troponin. The binding of calcium to the troponin changes it's shape so the myosin binding sites on the actin (thin filament) are exposedbind to regulatory sites on troponin to remove contraction inhibition
What chemical ion is responsible for initiating the contraction of a muscle fiber?
Calcium ions bind to the thin filament ( actin ), turn it and expose the binding site to the thick filament (myosin ).
What is the model that best describes the contraction of the muscle called?
There are different models that describe the contraction of muscles. Not everyone agrees on which is best. A couple of the models are the sliding-filament model and Huxley's model.
In isometric contraction how does the muscle stay the same length when the sarcomeres are shortening according to the sliding filament theory?
Dear freind! there is not any filamnet sliding in isometric contraction and so there is no work...
What happens when thin filaments in a muscles fiber slide over the thick filament?
Contraction or relaxation of muscle fibre, due to similar effect in sarcomere
The sliding filament mechanism of muscle contraction involves?
during contraction, the thin filaments slide past the thick filaments so that actin and myosin filaments overlap.
