Question

Anisotropic band is made of

• A. Myosin filaments
• B. Actin filaments
• C. Elastin filaments
• D. Both A and B

Answer 1

The correct option is D Both A and B

• Skeletal muscle fiber is made up of two types of filaments. They are thick filament (myosin) and thin filament (actin). The ‘A’ and ‘I’ bands are arranged alternately throughout the length of the myofibrils.
  
• The A band in skeletal muscle is also called as anisotropic band.
• The anisotropic band is made of both actin filaments and myosin filaments.
  
• So, the correct answer is 'Both A and B'.