The following questions refer to comparative concentrations, permeabilities, and potentials under various circumstances. Indicate the relationship between the two items listed in each situation by following answer code.
-A. concentration of K? in the extracellular fluid
B. concentration of K? in the intracellular fluid of a resting nerve cell
A)A is greater than B
B)B is greater than A
C)A and B are equal

Question

Quizplus · Accepted Answer

The concentration of K+ is higher in the intracellular fluid of a resting nerve cell compared to the extracellular fluid. This is because K+ channels are more permeable than Na+ channels in resting nerve cells, allowing more K+ to leak out of the cell and into the extracellular fluid. As a result, the concentration of K+ is higher inside the cell than outside.

The Following Questions Refer to Comparative Concentrations, Permeabilities, and Potentials