Resting membrane potential

अब Quizwiz के साथ अपने होमवर्क और परीक्षाओं को एस करें!

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


संबंधित स्टडी सेट्स

Fluid and Electrolyte PrepU NUR 1275

View Set