Which feature characterizes skeletal muscle contraction?
A) Sarcomeres lengthen
B) I band broadens
C) Z lines move toward A band
D) H zone broadens
E) M band moves toward H zone

Question

Quizplus · Accepted Answer

During skeletal muscle contraction, the Z lines move towards the A band as the sarcomeres shorten. This results in a shortening of the muscle fiber and ultimately causes muscle contraction. The other options (A, B, D and E) describe changes in the sarcomere during muscle relaxation or other processes.

Which Feature Characterizes Skeletal Muscle Contraction