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Muscular System

How is smooth muscle similar to skeletal muscle?


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June 05, 2012 5:20AM

Both skeletal and smooth muscle contain actin and myosin filaments, which form cross-bridges in order for the muscle to contract. Both also contain a sarcoplasmic reticulum - which stores calcium. In both muscle types, this calcium allows for cross-bridge formation between the actin and myosin filaments when it is released (it acts directly on myosin in smooth muscle and acts indirectly in skeletal muscle).