The following question refers to comparative concentrations, permeabilities, and potentials under various circumstances. Indicate the relationship between the two items listed in each situation by filling the appropriate letter in the blank using the following answer code:
-A. permeability of a nerve cell membrane to Na⁺ during the rising phase of an action potential
B. permeability of a nerve cell membrane to K⁺ during the rising phase of an action potential

Question

Quizplus · Accepted Answer

During the rising phase of an action potential, the permeability of a nerve cell membrane to Na⁺ is greater than to K⁺ because voltage-gated Na⁺ channels open, allowing Na⁺ to flow into the cell.

The Following Question Refers to Comparative Concentrations, Permeabilities, and Potentials