You Are Recording Calcium Channel Currents Using Whole Cell Patch

question 29

Multiple Choice

You are recording calcium channel currents using whole cell patch clamp methods from frog sympathetic ganglia neurons with GTP-γ-s included in the patch pipet. What would happen when you added norepinephrine to the solution bathing this neuron.

• A) Norepinephrine would activate calcium currents for a shorter amount of time than normal.
• B) Norepinephrine would switch its target and couple to potassium currents.
• C) Norepinephrine would not affect calcium currents.
• D) Norepinephrine would persistently activate calcium currents.
• E) Norepinephrine would persistently inhibit calcium currents.

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