Muscle contraction - Wikipedia, the free encyclopedia
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Muscle fiber generates tension through the action of actin and myosin cross-bridge cycling. While under tension, the muscle may lengthen, shorten or remain the same. Though the term 'contraction' impl...
en.wikipedia.org/wiki/Muscle_contraction
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Fueling Muscle Contraction ... ATP is the immediate source of energy for muscle contraction. Although a muscle fiber contains only enough ATP to power a few twitches, its ATP "pool" is replenished as needed. There are three sources of high-energy phosphate to keep the ATP pool filled.
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users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Muscl...
users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Muscles.html
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2. Identify the molecular components of the sarcomere, the functional unit of skeletal muscle cells; 3. Explain the mechanism of skeletal muscle contraction...
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www.brookscole.com/chemistry_d/templates/student_resour...
www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animations/muscles/muscles.html
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The Mechanism of Muscle Contraction ... Below are two different but similar descriptions of muscle contraction that explain the processes involved in notification, contraction, and relaxation. The following steps are involved in muscle contraction:;
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savell-j.tamu.edu/muscontract.html
savell-j.tamu.edu/muscontract.html
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Finally, a cross-bridge is formed and the myosin releases the ADP, flexes, and slides the filaments, which causes the actual contraction of the muscle.
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www.unc.edu/~freet1/_private/physics%20web%20page.htm
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The force of a muscle contraction is very powerful, on the order of about forty three pounds per square inch. The design of this force is such that if an unexpected shock is applied to the limb, that the bone is as likely to break as the tendon and muscle to tear.
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The cross-bridge/muscle contraction cycle includes the power-stroke, as the myosin head must attach to the actin, which it does via a 'powerstroke' to push ...
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www.youtube.com/watch?v=gJ309LfHQ3M
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Return to the Home Page for more animations on additional topics.
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entochem.tamu.edu/MuscleStrucContractswf/index.html
entochem.tamu.edu/MuscleStrucContractswf/index.html
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