During muscle contraction
A)myosin pulls actin filaments toward the M disk.
B)myosin pushes actin filaments toward the Z disk.
C)actin pulls myosin toward the Z disk.
D)actin pushes myosin toward the M disk.
E)All of the answers above are correct.

Question

Quizplus · Accepted Answer

During muscle contraction, myosin heads bind to actin filaments and use ATP to pull them toward the center of the sarcomere, which is the M disk. This causes the sarcomere to shorten and results in muscle contraction. Therefore, option A is the correct answer. The other options are incorrect as they describe actions that do not occur during muscle contraction.

During Muscle Contraction