Part A Which of the following changes take place as the musc

Part A

Which of the following changes take place as the muscle contracts?

The Z lines get closer together.

The H zones get smaller.

The I band gets smaller.

The A band gets smaller.

The Z lines get closer together, the H zones, and the I band gets smaller.

Answer: E: the Z lines get closer together, the H zones, and the I band gets smaller.

When the muscle contracts, the A band does not change in length.