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

Options

(a) The central gap between myosin filaments in the A-band
(b) The central gap between actin filaments extending through myosin filaments in the A-band
(c) Extension of myosin filaments in the central portion of the A-band
(d) The absence of myofibrils in the central portion of A-band

Correct Answer:

The central gap between actin filaments extending through myosin filaments in the A-band

Explanation:

Central part of thick filament, not overlapped by thin filaments is called the ‘H’ zone. ‘H’ zone is also called Hensen’s Line.