What structure marks the separation between two sarcomeres?
Correct answer: D. Z disc
- A. I band
- B. H zone
- C. A band
- D. Z disc
Explanation
Z-discs are the dividing points between sarcomeres. Actin filaments extend from this region and are joined together by several complex protein structures.
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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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