Ions used to establish a resting potential?

Answer 1

Potassium and sodium determine the a cell's resting membrane potential. The equilibrium potential (the voltage where no ion would flow) for sodium is about +60 mV while that for potassium is usually around -80 mV, but because the resting cell membrane is approximately 75 times more permeable to potassium than to sodium, the resting potential is closer the the equilibrium potential of potassium. This is because potassium leak channels are always open while sodium come in through voltage gated or ligand gated channels.

Answer 2

Sodium (Na+) and Potassium (K+) ions are primarily responsible for establishing the resting potential of a neuron. At rest, there are more sodium ions outside the cell than inside, contributing to a positive charge outside the cell. In contrast, there are more potassium ions inside the cell than outside, contributing to a negative charge inside the cell.

Answer 3

Cl, Na, and K work through osmosis, and the sodium-potassium pump to create equilibrium in the cell, and thus the resting potential.

Answer 4

2 Potassium (K+) ions in, 3 sodium (Na+) ions out

Answer 5

Inside the cell, potassium is at its highest concentration during resting membrane potential.

Answer 6

Potassium and sodium