The light band of the myofibril that contains actin but no myosin is the
- A. A band
- B. H zone
- C. I band
- D. Z line
Explanation
The I band holds only thin actin filaments and shortens during contraction, while the A band spans the whole length of the myosin. The Z line bisects each I band and marks the boundary of the sarcomere.
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