Which of the following statements are true of electrical changes at the sarcolemma? (Read carefully and select all of the correct statements.) A)A polarized muscle fiber has more Na⁺ ions inside that outside. B)Depolarization is the movement of K⁺ ions into the cell. C)Repolarization is the movement of Na⁺ ions out of the cell. D)A polarized muscle fiber has a positive charge inside and a negative charge outside. E)Depolarization is a reversal of charges; the cell has a positive charge outside and a negative charge inside F)An action potential is depolarization followed by repolarization.

Question

Quizplus · Accepted Answer

An action potential involves depolarization, where Na⁺ ions move into the cell, followed by repolarization, where K⁺ ions move out, restoring the resting potential.

Which of the Following Statements Are True of Electrical Changes