The H-zone in the skeletal muscle fibre is due to

Options

A. Extension of myosin filaments in the central portion of the A-band
B. The absence of myofibrils in the central portion of A-band
C. The central gap between myosin filaments in the A-band
D. The central gap between actin filaments extending through myosin filaments in the A-band

Answer

D

Explanation

H – zone is the non overlapping region of myosin or thick filament which either reduces or completely disappear during muscle contraction