Which of the statements about muscle contraction is not true?
A)During muscle contraction the sarcomere becomes shorter.
B)During muscle contraction the I band becomes shorter.
C)During muscle contraction the H zone becomes shorter.
D)During muscle contraction the A band becomes shorter
E)During muscle contraction the distance between the Z disk and the M disk becomes shorter.

Question

Quizplus · Accepted Answer

During muscle contraction, the A band does not become shorter. It remains the same length since it contains the thick filaments, which do not change in length during contraction. The other options are true because they relate to the changes that occur within the sarcomere during muscle contraction.

Which of the Statements About Muscle Contraction Is Not True