Which of the Following Is One of the Steps That

question 24

Multiple Choice

Which of the following is one of the steps that ends a contraction?

• A) Sarcoplasmic reticulum absorbs sodium ions.
• B) Acetylcholine binds to receptors on the sarcolemma.
• C) Calcium ions bind to troponin.
• D) Acetylcholine is broken down by acetylcholinesterase.
• E) An action potential spreads across the entire surface of the muscle fiber.

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