Question

multiple choice question the myosin structure labeled a is a cross - bridge. myosin head. myosin tail.

Explanation:

Myosin is a motor protein involved in muscle - contraction. The part labeled A is the myosin head which binds to actin filaments during muscle contraction and forms cross - bridges. The myosin tail is the long, fibrous part that aggregates to form the thick filaments.

Answer:

myosin head