The Acetylcholine Receptor Is Restored to Its Normal Closed Position

question 45

Multiple Choice

The acetylcholine receptor is restored to its normal closed position by

• A) diffusion of excess acetylcholine out of the synapse.
• B) movement of Na⁺ ions into the muscle cell.
• C) movement of Na⁺ ions out of the muscle cell.
• D) exocytosis of acetylcholine.
• E) the activity of acetylcholinesterase.

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