Dark bands of skeletal muscles are:
Correct answer: B. A band
- A. Z band
- B. A band
- C. I band
- D. H zone
Explanation
The light bands are called I bands and contain only thin filaments. The dark bands are called A bands and contain thick and thin filaments. H-band: the area adjacent to the M-line where myosin is not superimposed by actin.
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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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