If a drug inhibits the release of calcium ions from the sarcoplasmic reticulum, what effect would this have on muscle contraction?

• A. Muscle contraction would be unaffected as calcium is not essential.
• B. Muscle contraction would be inhibited as myosin cannot bind to actin.
• C. Muscle contraction would be enhanced due to increased calcium availability.
• D. Muscle contraction would occur more rapidly due to faster cross-bridge cycling.

Answer: (B)