Which events occur during a muscle contraction?
A)The H zone decreases in size.
B)The I band increases in size.
C)The myofilaments shorten in length.
D)Actin pulls myosin toward the center of the sarcomere.

Question

Quizplus · Accepted Answer

During muscle contraction, the H zone decreases in size as the actin and myosin filaments slide past each other, shortening the sarcomere. The myofilaments themselves do not shorten, and actin does not pull myosin; rather, myosin pulls actin toward the center of the sarcomere.

Which Events Occur During a Muscle Contraction