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HomeHomework HelpbiologyResting Potential

Resting Potential

Resting potential is the electrical charge difference across a neuron's membrane when it is not actively transmitting a signal, typically around -70 millivolts. This state is maintained by the distribution of ions, primarily sodium and potassium, inside and outside the neuron.

beginner
2 hours
Biology
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Overview

Resting potential is a fundamental concept in neuroscience, representing the electrical state of a neuron when it is not actively transmitting signals. It is characterized by a negative charge inside the neuron, typically around -70 mV, which is crucial for the neuron's ability to generate action po...

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Key Terms

Neuron
A nerve cell that transmits signals in the nervous system.

Example: Motor neurons control muscle movements.

Membrane Potential
The voltage difference across a cell's membrane.

Example: The resting membrane potential of a neuron is about -70 mV.

Ion Channel
A protein that allows specific ions to pass through the cell membrane.

Example: Sodium channels open during an action potential.

Polarization
The state of having a difference in charge across a membrane.

Example: Resting potential is a polarized state.

Sodium-Potassium Pump
A protein that moves sodium out and potassium into the cell, maintaining resting potential.

Example: The pump helps keep the inside of the neuron negative.

Equilibrium Potential
The membrane potential at which there is no net movement of a particular ion.

Example: The equilibrium potential for potassium is around -90 mV.

Related Topics

Action Potential
The process by which neurons send signals through rapid changes in membrane potential.
intermediate
Neurotransmission
The process of transmitting signals between neurons through neurotransmitters.
intermediate
Neuropharmacology
The study of how drugs affect the nervous system and behavior.
advanced

Key Concepts

neuronmembrane potentialion channelspolarization