The diameter of thick filament is:
Correct answer: D. 16 nm
- A. 16 µm
- B. 7-8 nm
- C. 1-2 µm
- D. 16 nm
Explanation
Option D is correct.Yes, the diameter of a thick filament in a sarcomere is about 16 nanometers. The thick filament is made up of a protein called myosin. Myosin is a long, rod-shaped protein that is made up of six myosin heavy chains and two myosin light chains. The myosin heavy chains are responsible for the thick filament's structure and the myosin light chains are involved in the binding of myosin to actin.The thick filament is arranged in a helical pattern along the center of the sarcomere. The myosin heads project from the main body of the molecule and are responsible for binding to the actin filaments and generating force.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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