Question

According to the sliding filament mechanism of skeletal-muscle contraction, during contraction:

• A. The thick filaments stay the same size but the thin filaments shorten.
• B. The sarcomeres shorten.
• C. The thin filaments stay the same size but the thick filaments shorten.
• D. Both thick and thin filaments shorten.

Answer 1

The correct option is B

The sarcomeres shorten.

During muscle contraction sarcomere shortens.