If the Soma of a Neuron Became More Permeable to Potassium

question 21

Multiple Choice

If the soma of a neuron became more permeable to potassium, which statement below best describes the graded potential that would be generated in the soma?

• A)Potassium would reach its equilibrium potential and the voltage inside the cell would not change.
• B)Potassium would leave the cell, causing the membrane to hyperpolarize.
• C)Potassium would enter the cell, causing the membrane to depolarize and reach threshold.
• D)Potassium is a cation; therefore, it would cause an excitatory depolarization.
• E)Potassium is an inhibitory second messenger; therefore, it would cause amplification of the graded potential.

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