What effect did decreasing the extracellular sodium have on the resting membrane potential?Only a small change occurred, because the resting neuron is not very permeable to sodium.Only a small change occurred, because the sodium channels were mostly open.The resting membrane potential disappeared.The resting membrane potential became less negative.
Question
What effect did decreasing the extracellular sodium have on the resting membrane potential?Only a small change occurred, because the resting neuron is not very permeable to sodium.Only a small change occurred, because the sodium channels were mostly open.The resting membrane potential disappeared.The resting membrane potential became less negative.
Solution
The effect of decreasing the extracellular sodium on the resting membrane potential would likely result in the resting membrane potential becoming less negative. This is because sodium ions carry a positive charge, so reducing the amount of sodium outside the cell would decrease the difference in charge between the inside and outside of the cell, making the resting membrane potential less negative. However, the change might be small if the neuron is not very permeable to sodium, meaning that sodium ions cannot easily cross the cell membrane.
Similar Questions
What effect did increasing the extracellular potassium have on the resting membrane potential?The resting membrane potential became more negative.The resting membrane potential disappeared.The resting membrane potential did not change.The resting membrane potential became less negative.
The maintenance of a resting membrane potential is due to three factors:(1) The concentration of K+ the membrane is than that the membrane.(2) The concentration of Na+ the membrane is than that the membrane.(3) The membrane is permeable to K+ than Na+.
Resting membrane potential:Results in high concentrations of Na+ on the outside of the cellIs maintained by the sodium/potassium ATPase pump continuously pumping Na+ into the cellResults in the outside of the cell having a -70mV polarity relative to the inside.Is the process by which cells communicate
Resting membrane potentials are important to neuron function because they:conserve energyprovide potential for future electrical communicationincrease the potassium levels outside the cellresult in high concentrations of sodium inside the cell
Reestablishment of the resting membrane potential occurs throughMultiple ChoiceActive transport of sodium and potassium ionsDiffusion of sodium and potassium ionsActive transport of only sodium ionsActive transport of only potassium ions
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