Choose the correct option to label the following parts
1.Thin filament 2.Thick filament 3.Sarcomere
Thick and thin filaments are protein filaments which form cylindrical structures called myofibrils. Each myofibril is arranged in a pattern, which repeats throughout the length of the myofibril. This repeating pattern is called a sarcomere, which is the basic contractile unit of a muscle fibre.