Question

When muscles are at rest, thin filaments overlap with thick filaments

• A. inside I-band
• B. inside M-line
• C. outside H-zone
• D. inside Z-line

Answer 1

The correct option is C outside H-zone

The A band contains thick and thin filaments. The I band is formed only of thin actin filaments. The H zone is formed only of thick myosin filaments. The M-line is present at the centre of the H-zone, while the Z-line is present at the centre of the I-band.
When a muscle is relaxed, actin and myosin partially overlap inside the A-band but outside the H-zone.