Question

question 27
what does \b\ represent on the diagram?
myosin myofilament
actin myofilament
sarcomere
z disk
cross - bridge

Explanation:

In muscle - fiber structure, myosin myofilaments are thick filaments. Actin myofilaments are thin filaments. A sarcomere is the basic contractile unit of muscle. A Z - disk marks the boundary of a sarcomere. Cross - bridges are the projections from myosin that interact with actin during muscle contraction. The structure labeled "B" in the diagram is a myosin myofilament as it is the thick filament in the sarcomere.

Answer:

Myosin myofilament