Myofilament vs. Myofibril — What's the Difference?
Difference Between Myofilament and Myofibril
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Myofilament
Myofilaments are the two protein filaments of myofibrils in muscle cells. The two proteins are myosin and actin and are the contractile proteins involved in muscle contraction.
Myofibril
A myofibril (also known as a muscle fibril or sarcostyle) is a basic rod-like organelle of a muscle cell. Muscles are composed of tubular cells called myocytes, known as muscle fibres in striated muscle, and these cells in turn contain many chains of myofibrils.
Myofilament
Any of the ultramicroscopic filaments, made up of actin and myosin, that are the structural units of a myofibril.
Myofibril
Any of the threadlike fibrils that make up the contractile part of a striated muscle fiber and are made up chiefly of actin and myosin filaments.
Myofilament
A filament within a myofibril, constructed from proteins
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Myofibril
(muscle) Any of the cylindrical organelles, found within muscle cells, that are the contractile unit of muscles.
Myofibril
One of many contractile filaments that make up a striated muscle fiber
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