What happens to the Z lines after contraction of the sarcomere?
A)The distance between the Z lines does not change.
B)The distance between the Z lines decreases.
C)The distance between the Z lines increases.
D)The Z lines disappear.
E)The Z lines become curved.

Question

Quizplus · Accepted Answer

During the contraction of the sarcomere, the distance between the Z lines decreases as the thin filaments (actin) slide over the thick filaments (myosin), causing the sarcomere to shorten.

What Happens to the Z Lines After Contraction of the Sarcomere