Resting Membrane Potential definitions Flashcards
Resting Membrane Potential definitions
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Resting Membrane Potential
Voltage difference across a neuron's membrane when inactive, typically around -70 millivolts. Central Nervous System
Part of the nervous system consisting of the brain and spinal cord. Sodium
Ion with higher concentration outside the cell, contributing to membrane potential. Potassium
Ion with higher concentration inside the cell, crucial for resting potential. Ionic Composition
Distribution of ions inside and outside the cell affecting membrane potential. Plasma Membrane Permeability
Cell membrane's ability to allow ions to pass through, influencing potential. Leak Channels
Channels allowing ions to passively move across the membrane, affecting potential. Sodium-Potassium Pump
Protein that maintains ion gradients by ejecting sodium and importing potassium. Concentration Gradient
Difference in ion concentration across the membrane driving diffusion. Diffusion
Movement of ions from high to low concentration, influencing membrane potential. Negatively Charged Proteins
Proteins inside the cell contributing to its negative interior charge. Cytosol
Fluid component inside cells where negatively charged proteins reside. Goldilocks Zone
Optimal balance of ion concentrations for stable resting potential. Neuron
Nerve cell that transmits electrical signals, maintaining resting potential. Charge Separation
Difference in charge between the inside and outside of the cell membrane.