What Is the Role of the Sarcoplasmic Reticulum in Muscle

question 236

Multiple Choice

What is the role of the sarcoplasmic reticulum in muscle contraction?

• A) It stores Ca²⁺ ions for release during contraction.
• B) It surrounds and protects the muscle filaments.
• C) It provides sites of ATP synthesis.
• D) It depolarizes when stimulated by an impulse.
• E) It synthesizes actin and myosin filaments.

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