← Hierarchial Structure of Muscle Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All Muscle organ Fascicles individual strings run the entire lenght of the muscle organ (fibers) Muscle Fibers muscle cells (contains thousands of myofibrils) Myofibrils organelles Myofilaments -thick filaments made of Myosin (a protein) -thin filaments made of Actin (a protein)