What Is the Concentration of Calcium Estimated to Be in the Presynaptic

question 7

Multiple Choice

What is the concentration of calcium estimated to be in the presynaptic nerve terminal after a brief train of action potentials?

• A) 100 nM
• B) 1µM
• C) 100 µM
• D) 500 µM
• E) 1 mM

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