Which of the Following Statements Best Describes the Role of Calcium

question 11

Multiple Choice

Which of the following statements best describes the role of calcium in the release of a neurotransmitter substance from the presynaptic nerve terminal?

• A)Calcium entry into the presynaptic terminal prevents the release of the neurotransmitter
• B)Calcium entry into the presynaptic terminal is necessary for the release of the neurotransmitter
• C)Calcium induces the opening of calcium-dependent sodium channels on the presynaptic terminal
• D)Calcium entry into the presynaptic terminal results in the formation of cyclic adenosine monophosphate, which induces a conformational change in the presynaptic sodium channel that leads to the release of neurotransmitter

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