DURING MUSCLE CONTRACTION 1] SIZE OF A BANDS REMAIN THE SAME 2] SIZE OF H ZONE BECOMES - Biology - Structural Organisation in Animals

Question

DURING MUSCLE CONTRACTION 1] SIZE OF A BANDS REMAIN THE SAME 2]
SIZE OF H ZONE BECOMES SMALLER 3] SIZE OF I BAND DECREASES 4]
DIAMETER OF FIBRE INCREASES

G. Lakshmi · Accepted Answer

During muscle contraction,

Length of A band remains
constant

I bands shorten

H zone narrows

Volume of contacted muscle remains
same

Note: All the given options are right and since
there is no 'all the above' option, I could not interpret your
query Please be little specific so that I could provide you
meaningful help

DURING MUSCLE CONTRACTION ...1] SIZE OF A BANDS REMAIN THE SAME 2] SIZE OF H ZONE BECOMES SMALLER 3] SIZE OF I BAND DECREASES 4] DIAMETER OF FIBRE INCREASES