This image is part of a series that was created for an open textbook, Cell Biology, Genetics and Biochemistry for PreClinical Students. The textbook will be available Late 2021.
Kindred Grey (2021). "Summary of the action potential as it relates to change in ion concentration across the membrane."CC BY 4.0.
Arrow pointing right labeled nerve impulse with boxes labeled resting potential, depolarization, repolarization, resting potential. Resting potential: Na+ at top, K+ at bottom. Top of box positive charge, bottom of box negative charge. Depolarization: Na+ moves down through a sodium channel. Top of box negative charge, bottom of box positive charge. Repolarization: K+ moves up through a potassium channel. Top of box positive charge, bottom of box negative charge. Resting potential: Na+ and K+ move through a sodium/potassium pump. Top of box positive charge, bottom of box negative charge.