What type of filaments do sarcomeres contain?
- Actin filament or thin filament
- Myosin filament or thick filament.
Ultrastructure of sarcomere contains two types of myofilaments i.e actin(thin) & myosin(thick) filaments.
- Thin Filament :
Thin filament is
#7-8nm"#in diameter. Thin filament extends the entire length of #"I-band"#. It is composed of three proteins that are:
- Thick Filament:
Thick filament is located at the centre of the sarcomere. It is about
#16nm#in diameter and it's mainly composed of myosin protein. The thick filament extends the entire length of #"A-band"#.
Hope it helps!