During muscles relaxation, the calcium ions are:
Correct answer: B. Forced back from the sarcoplasm to sarcoplasmic reticulum
- A. Released from sarcoplasmic reticulum into Sarcoplasm
- B. Forced back from the sarcoplasm to sarcoplasmic reticulum
- C. Further Forced from sarcoplasmic reticulum into sarcoplasm
- D. Neither released more nor forced back but remain constant
Explanation
When muscles relax, the calcium ions are forced / pumped back from the sarcoplasm into the sarcoplasmic reticulum so that the globular head can remove itself from the acting binding site
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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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