Opening All of the Sodium Channels on an Otherwise Typical

question 53

Multiple Choice

Opening all of the sodium channels on an otherwise typical neuron, with all other ion channels closed (which is an admittedly artificial setting) , should move its membrane potential to ________.

• A) -90 mV
• B) 0 mV
• C) equilibrium potential for sodium
• D) The membrane potential would not change, only the ion concentrations would change.

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Definitions:

Moderate

A term indicating a middle or average degree of intensity, quality, or quantity.

Circumference

The linear distance around the edge of a circle or circular object.

Weight

A measure of the gravitational force exerted on an object, typically measured in units like kilograms or pounds.

Nonlinear

Not forming a straight line; describes relationships in which change in one quantity does not produce a proportional change in another.