The one that stores calcium is __________?
Correct answer: C. Sarcoplasmic reticulum
- A. Sarcolemma
- B. Sarcoplasm
- C. Sarcoplasmic reticulum
- D. Cytosol
Explanation
The sarcoplasmic reticulum is a specialised smooth endoplasmic reticulum that stores calcium ions and releases them to start muscle contraction. The likely mistake is sarcoplasm, which is the muscle-cell cytoplasm but is not the specialised calcium-storage network.
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