Which of these statements is an accurate representation of membrane permeability and ion potential
A)The concentration of potassium ions is the same extracellularly and intracellularly.
B)The concentration of potassium is higher extracellularly than intracellularly.
C)The concentration of sodium is higher extracellularly than intracellularly.
D)The concentration of sodium is lower extracellularly than intracellularly.

Question

Quizplus · Accepted Answer

The concentration of sodium ions is higher extracellularly than intracellularly. This difference in concentration creates an electrochemical gradient that favors the movement of sodium into the cell. The permeability of the cell membrane to sodium ions is also higher than to potassium ions, further contributing to the net movement of sodium into the cell.

Which of These Statements Is an Accurate Representation of Membrane