muscle system part 2

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Creatine phosphate serves to

myofibrils are composed primarily of

A motor unit includes

The enzyme cholinesterase causes acetylcholine to

The amount of oxygen needed to support the conversion of lactic acid to glucose is called the

ADP molecules on the surface of actin serve as active sites for the formation of cross bridges with molecules of

An example of a partial but sustained contraction would be

a muscle cramp is likely due to a lack of