myo·fi·bril·la /-faɪˈbrɪlə, fɪ; ˈfaɪbrɪlə, ˈfɪ-/ 名詞 肌原纖維
myofibrilla n : one of many contractile filaments that make up a striated muscle fiber [syn: myofibril, sarcostyle] [also: myofibrillae (pl)]