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NEETZoologyLocomotion and Movement

Skeletal Muscle Component Composition A. A-band 1. Contains only actin filaments B. I-band 2. Contains both actin and myosin filaments C. H-zone 3 .Contains only myosin filaments D. Z-line 4. Composed of proteins that anchor actin filaments

Options

  1. AA - 2, B - 1, C - 3, D - 4
  2. BA - 3, B - 4, C - 1, D - 2
  3. CA - 1, B - 4, C - 2, D - 3
  4. DA - 4, B - 2, C - 1, D - 3

Correct answer

A. A - 2, B - 1, C - 3, D - 4

Step-by-step solution

A-band: The dark band that contains both actin and myosin filaments. I-band: The light band that contains only actin filaments. H-zone: The central part of the A-band that contains only myosin filaments. Z-line: A structure composed of proteins that anchors the actin filaments and defines the boundaries of a sarcomere.

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