How a Muscle Contraction is Signalled - Animation

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Published 23 May 2009
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Impulse to activate action potential in skeletal muscle, My notes.... VIII.Muscle Fibers a.specific structu...
Impulse to activate action potential in skeletal muscle, My notes.... VIII.Muscle Fibers a.specific structures in muscle cells (muscle fibers)(skeletal) allow the cells to contract and relax i.myofibrils (fills nearly all cytoplasm) 1.cylindrical structures that make up bulk of cytoplasm 2.consist of a chain of small, contractile units (sarcomeres) a.give muscle fiber striped appearance b.composed of myosin-II and actin i.myosin-II = thick center ii.actin = thin filaments that overlap mysoin ...
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