Consider the structure of a sarcomere. Which of its features does NOT shorten during skeletal muscle contraction?
A) The dark band
B) The light band
C) The distance from the M line to the Z disc
D) The distance between two consecutive Z discs
E) The extension of the titin molecules

Question

Quizplus · Accepted Answer

The dark band represents the thick myosin filaments and its length remains fairly constant, whereas the light band and the total sarcomere length shorten by several percent.

Consider the Structure of a Sarcomere