Which of the following statements about what happens during a muscle contraction is true?

Question

Quizplus · Accepted Answer

Myosin filaments slide along actin filaments during muscle contraction. This sliding is facilitated by the cross-bridge formation between myosin heads and actin filaments. As the myosin heads move, they pull the actin filaments towards the center of the sarcomere, causing the entire sarcomere to shorten. Actin and myosin filaments themselves do not change in length during a contraction. The myosin filaments do not attach to the Z disks, but rather they are anchored in place by the M line in the center of the sarcomere.

Which of the Following Statements About What Happens During a Muscle