During the Rising (Depolarizing) Phase of a Neuronal Action Potential

question 18

Multiple Choice

During the rising (depolarizing) phase of a neuronal action potential,

• A) P_K+ becomes much greater than P_Na+.
• B) P_Na+ becomes much greater than P_K+.
• C) P_K+ is the same as P_Na+.
• D) Na⁺ efflux (flow out of the cell) occurs.
• E) K⁺ flows rapidly into the cell.