ANATOMY

Detailed explanation-1: -Both thick filaments made up of myosin and thin filaments composed of actin together form a sarcomere .

Detailed explanation-2: -The thick filaments of muscle consist of several hundred myosin molecules, associated in a parallel staggered array by interactions between their tails (Figure 11.23). The globular heads of myosin bind actin, forming cross-bridges between the thick and thin filaments.

Detailed explanation-3: -The thick filaments are composed of myosin with the globular heads forming cross-bridges with thin filaments. Myosin-binding proteins, including MyBP-C, are associated with the thick filaments. The giant protein titin extend the length of an entire half sarcomere.

Detailed explanation-4: -Thick filaments are composed of dimers of a remarkable force-generating protein called myosin. Allmyosin molecules have helical tails and globular head groups that hydrolyze ATP and act as motors to move along an actin filament.

Detailed explanation-5: -The thick filaments are made up of myosin while the thin filament is made up of three proteins actin, troponin, and tropomyosin. So, the correct answer is ‘Myosin’.