What Happens to a Sarcomere When Muscle Contraction Occurs

Question

What happens to a sarcomere when muscle contraction occurs?
A) It shortens.
B) It lengthens.
C) It remains the same.
D) It lengthens and then shortens.

Accepted Answer

During muscle contraction, the sarcomere shortens due to the sliding of actin filaments over myosin filaments, bringing the Z lines closer together.