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The H-zone in the skeletal muscle fibre ...

The H-zone in the skeletal muscle fibre is dueto

A

the absence of myofibrils in the central portion of A-band

B

the central gap between myosin filaments in the A-band

C

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

D

extension of myosin filaments in the central portion of the A-band.

Text Solution

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The correct Answer is:
C
The edges of thin filament (Actin) on either side of thick filaments (myosin) partially overlap the free ends of the thick filaments (myosin) leaving the centralpart of thick filament (myosin). This central part of thick filament (myosin),not overlapped by thin filaments (Actin) is called the 'H'-zone.
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