A-bandOne of the two kinds of band visible under certain conditions in a skeletal muscle fiber; the alternation of the two kinds produces the cross-striations on skeletal muscle. The other kind is the I-band. The A-(anisotropic) band, unlike the I-(isotropic)band, contains the myosin filaments. Related category• ANATOMY AND PHYSIOLOGYAlso on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |