Question

question 54
the _______ heads are responsible for generating cross bridge formations.
○ troponin
○ myofibril
○ myosin
○ actin

Explanation:

In muscle contraction, myosin heads bind to actin filaments to form cross - bridges. Troponin is involved in regulating muscle contraction by moving tropomyosin. Myofibrils are the contractile units of muscle cells, not directly responsible for cross - bridge formation. Actin is the filament that myosin binds to, but actin itself doesn't have heads for cross - bridge formation. So myosin heads are responsible for generating cross - bridge formations.

Answer:

C. myosin