How a Muscle Contraction is Signalled - Animation

By: DaggerBiology


Uploaded on February 04, 2009 by DaggerBiology Powered by YouTube

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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