Medical Dictionary

myofibril

noun myo·fi·bril \ˌmī-ō-ˈfīb-rəl, -ˈfib-\

Medical Definition of MYOFIBRIL

:  one of the longitudinal parallel contractile elements of a muscle cell that are composed of myosin and actin
myo·fi·bril·lar \-rə-lər\ adjective

Illustration of MYOFIBRIL

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