Question

In skeletal muscle, the central part of the dark band without the thin filaments is called:

• A. Z line
• B. Sarcomere
• C. Hensen’s disc
• D. Krause’s membrane

Hint:

The visibility of the H zone varies with muscle contraction and is most apparent when the muscle is relaxed.

Answer 1

The Correct Option is C

Exploring muscle fiber structure. The Hensen's disc is a less commonly used term for the H zone found within the A band of the sarcomere in skeletal muscle fibers. This area appears lighter under a microscope because it lacks actin filaments and contains only myosin filaments. It is crucial for muscle contraction mechanics.