Acetylcholine Is a Neurotransmitter That Transmits a Signal from a Nerve

question 28

Multiple Choice

Acetylcholine is a neurotransmitter that transmits a signal from a nerve cell to a muscle cell,causing the muscle to contract.How is the neurotransmitter inactivated so that the muscle can relax?

• A)It is denatured by the local pH and loses its active conformation.
• B)It is hydrolyzed by the enzyme acetylcholinesterase.
• C)It is taken up and stored by the muscle cells.
• D)It is dissolved in the blood and is transported through the circulatory system.
• E)All of the choices are correct.

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