A) 1
B) H
C) A
D) A line
E) H and Z line
Correct Answer: C
Solution :
Muscle fibre shows transverse striations as alternate dark A (anisotropic) and light I (isotopic) bands. Z line (dense) is present at the centre of band. It is called as Krauses membrane, with divides myofibrils into functional unit called sarcomeres. H-Zone is found at the centre of A band. M-line o rHensens line is the middle of H zone. During contraction and relaxation of muscles, both I band and H zone progressively shorten and disappears. So dark A band (anisouopic) undergo no change during contraction and relaxation of muscle fibres.You need to login to perform this action.
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