Question

Given below is the diagrammatic representation of a sarcomere
Mark the option with a correct description of the structure labelled as I, II, III and IV in the same

• A. I - Elastic fibre that bisects I-band
  II-Width of this band reduces during muscle contraction
• B. II - Consists of myosin filaments
  III - Width of this band remains same during muscle contraction
• C. III - Light band that contains actin filaments
  IV - Don't exist when the sarcomere gets contracted maximally
• D. I - Z-line to which thin filaments are firmly attached
  IV - H-zone which can be seen in a maximally contracted muscle fibre also

Answer 1

Answer: (C)

Correct answer is (c) III - Light band that contains actin filaments
IV - Don't exist when the sarcomere gets contracted maximally