All of the following are true about a contracting muscle fiber as compared to a relaxed muscle fiber EXCEPT the _____ in a contracting fiber.
A) I bands are shorter
B) A bands are shorter
C) H zones are shorter
D) sarcomere is shorter
E) Z lines are closer together

Question

Quizplus · Accepted Answer

In a contracting muscle fiber, the A bands are actually longer due to the sliding of actin and myosin filaments past each other, which results in overlap between them. Therefore, all of the other options are true about a contracting muscle fiber as compared to a relaxed muscle fiber.

All of the Following Are True About a Contracting Muscle