|
The muscle band that remains unchanged during contraction and relaxation of the skeletal muscle is |
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|
a) |
I |
b) |
H |
c) |
A |
d) |
A-line |
|
The muscle band that remains unchanged during contraction and relaxation of the skeletal muscle is |
|||||||
|
a) |
I |
b) |
H |
c) |
A |
d) |
A-line |
(c)
During contraction and relaxation of muscles, both I-band and H-zone progressively shorten and disappears.
Dark A-band (anisotropic) undergo no change during contraction and relaxation of muscle fibres.