A bands

The dark-staining anisotropic cross striations in the myofibrils of muscle fibres, comprising regions of overlapping thick (myosin) and thin (actin) filaments.

Synonym: A disks, anisotropic disks, Q bands, Q disks.

(05 Mar 2000)


Terms mentioned in text: staining, anisotropic, cross, striations, myofibrils, muscle fibres, regions, overlapping, thick, myosin, thin, actin, filaments, a disks, anisotropic disks, q bands, q disks
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