Question

Thick and thin filaments form the (i)__________. The thick and thin filaments overlap and form a definite pattern that form repeating units called (ii)______.

• A. Myofibrils and sarcomere
• B. Sarcomere and Myofibrils
• C. Fascia and fascicle
• D. Fascicle and Fascia

Answer 1

The correct option is A

Myofibrils and sarcomere

Thick and thin filaments are protein filaments which form cylindrical structures called myofibrils. Each myofibril is arranged in a pattern, which repeats itself throughout the length of the myofibril.This repeating pattern is called a sarcomere which is the basic contractile unit of a muscle fibre.