Sodium (Na*) and Potassium (K+) are equally distributed across the neuronal membrane atresting membrane potential because of the:O Unassisted passive diffusion across the membraneO Nat/K+ PumpO Nongated ChannelsVoltage-gated ChannelsChemically-gated Channels Membrane permeability at resting membrane potential is dominated by:O Unassisted passive diffusion across the membraneCo-transportersNongated ChannelsO Voltage-gated ChannelsO Chemically-gated Channels

Sodium (Na*) and Potassium (K+) are equally distributed across the neuronal membrane at resting membrane potential because of the: O Unassisted passive diffusion across the membrane O Nat/K+ Pump O Nongated Channels Voltage-gated Channels O Chemically-gated Channels

Sodium (Na*) and Potassium (K+) are equally distributed across the neuronal membrane at resting membrane potential because of the: O Unassisted passive diffusion across the membrane O Nat/K+ Pump O Nongated Channels Voltage-gated Channels O Chemically-gated Channels

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 17RE

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Sodium (Na*) and Potassium (K+) are equally distributed across the neuronal membrane at
resting membrane potential because of the:
O Unassisted passive diffusion across the membrane
O Nat/K+ Pump
O Nongated Channels
Voltage-gated Channels
Chemically-gated Channels

Membrane permeability at resting membrane potential is dominated by:
O Unassisted passive diffusion across the membrane
Co-transporters
Nongated Channels
O Voltage-gated Channels
O Chemically-gated Channels

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