Actin | Myosin |
The filaments are composed of actin proteins, troponin and tropomyosin. | The filament is composed of myosin and meromyosin. |
This is known as the thin filament and short in length. | This is known as the thick filament and longer in length. |
One end is free and the other end is attached to the Z-line. | Both the ends are free. |
This allows sliding into the H-zone during muscle contraction. | This does not slide during muscle contraction. |