tissue muscle tissue AAO:0000306 AEO:0000122 CALOHA:TS-0642 EHDAA2:0003122 EMAPA:32715 FMA:9641 MA:0002437 MESH:D009132 Muscle tissue is a contractile tissue made up of actin and myosin fibers[GO]. One of the four types of tissue in traditional classifications. Tissue that contains cells with contractile filaments that move past each other and change the size of the cell. Muscle tissue also is separated into three distinct categories.[AAO] UMLS:C2328219 Vertebrate muscle is categorized into three major muscle types defined by their structural and functional properties: skeletal, cardiac and smooth. In Dmel the counterparts are somatic, heart/cardiac and visceral. Here we take a cell type based approach. galen:MuscleTissue muscular tissue portion of muscle tissue textus muscularis