Resting membrane potential

What is largely responsible for the negative resting membrane potential (around -70 mV) in a neuron?

Potassium leak currents

Ions are atoms or molecules that carry an electric charge due to the gain or loss of ____

electrons

The lipid bilayer portion of the membrane ______

is impermeable to most polar molecules and ions

Ion channels are made of____

protein

The sodium-potassium pump is responsible for ________

pushing three sodium ions out of the cell for every two potassium ions pumped in, and returning the membrane potential to the resting state

For a typical animal cell, the membrane potential is determined by the equilibrium distribution of K+ ions across the cell membrane. Free movement of K+ across the membrane occurs through _______________

the K+ leak channel

When the neuron expels potassium ions ___________

the inside of the cell loses positive ions and produces a negative charge inside

The equilibrium potential for potassium is about ______ mV

-80

When the charge across the membrane of a neuron is between _____________, the charge is called the __________ This is due to an ___________

60 and 70 mV; resting potential; efflux of positive ions

Which of the following statements best describes the neural membrane during the resting phase?

All of the voltage gated sodium and potassium channels are closed