The cell in the figure is at resting potential. We open sodium channels in the cell membrane, then close the sodium channels after sodium has stopped flowing. We then open potassium channels and close them after potassium stops flowing. The cell will first______, then it will______ K+ K+ K+ K+ Na+ K+ Na+ Na+ Na+ Na+ K+ Inside Na+ K+ Na+ Na+ Na+ Na+ K+ Na+ Na+ Na+ Na+ Outside K+ K+ K+ K+ hyperpolarize, hyperpolarize some more hyperpolarize, depolarize depolarize, depolarize some more depolarize, hyperpolarize
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We open sodium channels: Sodium ions (Na+) will flow into the cell due to the concentration gradient and the electrical gradient. This will cause the inside of the cell to become more positive, which is called depolarization. Show more…
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The cell in the figure is at resting potential. We open sodium channels in the cell membrane; then close the sodium channels after sodium has stopped flowing: We then open potassium channels and close them after potassium stops flowing: The cell will first then it will K+ K+ K+ K+ Na+ K+ Na+ Na+ Na+ Na+ K+ Inside Na+ K+ Na+ Na+ Na+ Na+ K+ Na+ Na+ Na+ Na+ Outside K+ K+ K+ K+ hyperpolarize, hyperpolarize some more hyperpolarize, depolarize depolarize depolarize some more depolarize, hyperpolarize
Madhur L.
During depolarization, the membrane potential is ________.. unchanged becoming more negative becoming more positive wavering up (positive) and down (negative) Net movement of this ion is primarily associated with repolarization. K+ Ca2+ Mg2+ Na+ The ionic concentrations in the interior and exterior of body cells ________. are the same reveal an excess of Na+ ions in the intracellular fluid reveal an excess of Na+ ions in the extracellular fluid reveal an excess of K+ ions in the extracellular fluid When a neuron is in the resting state, ________. both Na+ and K+ leak out of the cell Na+ leaks out of the cell and K+ leaks into the cell Na+ leaks into the cell and K+ leaks out of cell both Na+ and K+ leak into the cell Resting membrane potential is maintained by the sodium-potassium pump, which transports both Na+ and K+ into the cell Na+ out of the cell and K+ into the cell both Na+ and K+ out of the cell Na+ into the cell and K+ out of the cell
This figure depicts a Na/K pump. It creates concentration gradients across the cell membrane by pumping out ____ and pumping in ____. outside inside Sodium, krypton Potassium, sodium Sodium, ketone Potassium, krypton Sodium, potassium
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