Although the membrane of a "resting" neuron is highly permeable to potassium ions, its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is alsofully permeable to sodium ions.slightly permeable to sodium ions.highly permeable to chloride ions.fully permeable to calcium ions.impermeable to sodium ions.SubmitRequest Answer
Question
Although the membrane of a "resting" neuron is highly permeable to potassium ions, its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is alsofully permeable to sodium ions.slightly permeable to sodium ions.highly permeable to chloride ions.fully permeable to calcium ions.impermeable to sodium ions.SubmitRequest Answer
Solution
The membrane potential of a "resting" neuron does not exactly match the equilibrium potential for potassium because the neuronal membrane is slightly permeable to sodium ions.
Here's a step-by-step explanation:
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The resting membrane potential of a neuron is determined by the concentration gradients of different ions across the membrane and the permeability of the membrane to these ions.
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Potassium ions (K+) have a higher concentration inside the neuron, while sodium ions (Na+) have a higher concentration outside the neuron.
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The neuronal membrane is highly permeable to potassium ions due to the presence of 'leak channels' that allow these ions to move across the membrane.
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However, the membrane is also slightly permeable to sodium ions.
Similar Questions
Reestablishment of the resting membrane potential occurs throughMultiple ChoiceActive transport of only potassium ionsDiffusion of sodium and potassium ionsActive transport of sodium and potassium ionsActive transport of only sodium ions
At resting membrane potential, voltage-gated potassium ion channels are open.
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+.
The plasma membrane of an excitable cell is more permeable to potassium ions becauseMultiple Choiceprotein molecules cannot exit through the cell membrane.calcium ions block Na+ and Cl- channels.of its positive electrical charge.there are more leak channels for K+ than Na+.there are more gated channels for K+.
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
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