At rest, a neuron has a lower concentration of sodium than the surrounding fluid. The neuron also has a higher concentration of potassium inside the cell. The sodium-potassium ion pump is used to maintain the neuron in the resting state. Which of the following statements is true?

At rest, a neuron has a lower concentration of sodium than the surrounding fluid. The neuron also has a higher concentration of potassium inside the cell. The sodium-potassium ion pump is used to maintain the neuron in the resting state. Which of the following statements is true?

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

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 7UC: Describe the contribution of each of the following to establishing and maintaining membrane...

See similar textbooks

Related questions

Q: What does a transporter protein do at a synapse? a. It carries neurotransmitter molecules from the…

A: A neurotransmitter does not stay at the postsynaptic membrane. If it stays, it continues to excite…

Q: The above depolarization of a neuron will result in which of the following ionic currents? a…

A: Action potential or an electrical impulse is another name for a nerve impulse. In contrast to a…

Q: The negatively charged intracellular environment and resulting resting membrane potential of neurons…

A: When a cell is not stimulated, its resting membrane potential is defined as the electrical potential…

Q: neuron

A: An action potential is triggered by a graded potential that causes the membrane to depolarize until…

Q: Suppose you inactivated a neuron’s Na/K exchange pumps (the active transporters), then immediately…

A: Na/K pump moves sodium and potassium ions against large concentrations gradients. It moves 2 K into…

Q: When the neuron’s membrane is at rest, where are the sodium ions and potassium ions most…

A: Answer is b.) Sodium is mostly inside and potassium is mainly outside.

Q: Hyperkalemia was discussed at length in this module. If a cell is experiencing hyperkalemia, what…

A: Question- Hyperkalemia was discussed at length in this module. If a cell is experiencing…

Q: Which of the following is TRUE regarding the absolute and relative refractory periods of the action…

A: The relative refractory period is that the interval of your time throughout that a second action…

Q: This graph shows the relative voltage of a neuron's cytoplasm near the plasma membrane relative to…

A: * There are three stages in membrane potential Depolarization Repolarization Hyperpolarisation…

Q: Suppose you inactivated a neuron’s Na/K exchange pumps (the active transporters), then immediately…

A: Hi! Thank you for the questions. As you have posted a question with multiple subparts, I will be…

Q: gradient is responsible for both the resting membrane potential and the action potential in the…

A: resting neuron has a certai. voltage across its membrane called the resting membrane potential.

Q: If all the Ca2+ in the fluid surrounding a neuron were removed, how would this affect the…

A: Action potentials coming at synaptic knobs enhance the release of neurotransmitter into the synaptic…

Q: Explain how the sodium–potassium pump and the properties of the membrane lead to the resting…

A: Sodium-Potassium pump is an active transport mechanism, which takes place in the cell membrane of…

Q: The extracellular sodium [Na+]0 is reduced in the saline bath. Following another current injection…

A: Polar large size molecules (glucose, amino acids) and Ions (Na+, H+,k+, Ca+) can't pass…

Q: The above repolarization of a neuron will result in which of the following ionic currents? a…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: A hypothetical cation has a Nernst potential of -30 mV. At 0 mV, the cation flows in which…

A: The Nernst equation is used to determine the equilibrium potential of ions based on their charge and…

Q: The above depolarization of a neuron will result in which of the following ionic currents? a…

A: Electrical signals regulate the contraction of muscle, secretion of hormones, sensation of the…

Q: ou observe that a neuron treated with a metabolic inhibitor which prevents ATP generation still can…

A: Neurons are the basic unit of the nervous system. The lipid bilayer is selectively permeable and is…

Q: If extracellular [Na1] is elevated, how would the resting potential and action potential of a neuron…

A: The nervous framework is a profoundly intricate piece of a creature that facilitates its actions and…

Q: If sodium and potassium ions are both positively charged, what causes the negative membrane…

A: Resting membrane potential is defined as the difference in the electric potential across the plasma…

Q: Which of the following statements regarding polarized membranes is incorrect? a. There is a…

A: At rest, the ionic composition of the interior and outside of a neuronal membrane varies. As a…

Q: Neurons, particularly those in the brain, receive multiple excitatory and inhibitory signals. What…

A: Neurons are the basic functional unit. It is a specialized cell that is designed to transfer…

Q: In an experiment, the extracellular [Na+] surrounding a nerve cell was reduced from 145 to 45 mM.…

A: In the presence and absence of an impulse, the nerve cells exist in two states known as action…

Q: Draw details of the repolarization phase of an action potential from the following descriptions of…

Q: In a resting neuron, which of the forces listed below will act to push sodium (Na+) ions into the…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: During the _____ phase of an action potential, the membrane potential is more positive than the…

A: Phases of generation of action potential from resting membrane potential Depolarisation…

Q: Which of the following statements is TRUE of the action potential?

A: Sodium –potassium pump is one of the major biochemical pathways leading to critical physiological…

Q: What happens to the sodium when the sodium channels open?

A: Sodium channels are basic film proteins that structure particle channels, directing sodium…

Q: At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron…

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: An 82-year-old woman is brought to the emergency room complain- ing of nausea, vomiting, muscle…

A: Introduction: Hyperkalemia is a condition of high potassium levels in blood.

Q: On the graph above, when do the sodium ion channels close? Select one: a. between 0.2 ms and 0.5 ms,…

A: When the stimulus is provided, the Sodium ion VGIC's (Voltage-gated ion channel) move from resting…

Q: n effector neuron is a motor neuron that transmits impulses from the CNS to an effector (muscle or…

A: Only if the stimulus is as intense as the skeletal muscle fiber's threshold will it be activated.…

Q: Andrew was taken to the doctor’s office after he was bitten by a stray dog. The concern was that the…

A: To say the movement of substances within a nerve cell is anterograde means they move towards the…

Q: Which of the following situations is correct for a neuron at its resting membrane potential? The…

A: Option 4 is the answer. K+ is high inside and Na+ , Cl- are high outside.

Q: Which of the following statements is false regarding the directions that forces of the…

A: The polarised neuron is called resting potential.

Q: At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron…

A: All capacities performed by the sensory system—from a basic engine reflex to further developed…

Q: Explain the following; If a drug partly blocks a membrane’s potassium channels, how…

A: Potassium channels are most widely distributed ionic pores present in the living organisms. These…

Q: In the membrane of a neuron, what happens during an IPSP? A. All the ion gates in the membrane…

A: The nerve tissue is made up of many nerve cells called as neurons. These neurons are the structural…

Q: ) Neurons cannot respond during the absolute refractory period because: a) the concentration…

A: The absolute refractory period starts immediately after the initiation of the action potential and…

Q: Which of the following will you consider as having the highest potency? A Neuronal progenitor cell B…

A: Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in…

Q: Assume a neuron's membrane potential is -60 mV, what's the net consequence on the membrane potential…

A: Action potentials are produced by axons and transmitted to local neurons. When a local neuron gets…

Q: The primary difference between an EPSP and an IPSP is the a) overall speed b) degree of effect c)…

A: EPSP = Excitatory postsynaptic potential. IPSP = Inhibitory postsynaptic potential . EPSP…

Q: One EPSP from neuron A depolarizes the initial segment of a neuron by +2 mV, one EPSP from neuron B…

A: 4) Mechanism of nerve conduction : • The action potential in pre synaptic neuron reaches its…

Q: Indicate the specific events that are occurring at 1,2,3 and 4. B. At which area of the graph are…

A: We are allowed to do upto three subpart of a question please repost the undone question again. Thank…

Q: The action potential is split into 4 parts (A-D). For each part, 1. Describe what stimulated the…

A: 1) Light stimulated the channel. Sensory neurons, like the ones that sense light in your eyes, are…

Q: Indicate the specific events that are occurring at 1,2,3 and 4. B. At which area of the graph are…

A: Action potentials are nerve messages. Neurons produce and convey these signals through their…

Q: Fluorescent FM dyes partition reversibly into biological membranes without penetrating through them.…

A: FM dyes are a type of fluorescent compound that has been used in the examination of the process of…

Q: Compare chemically-gated VS voltage-gated channels

A: Gated ion channels are pore forming, multimeric membrane peptides that allows across flow of ions in…

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

Remaining at rest requires the use of ATP.

Remaining at rest requires an input of sodium.

Remaining at rest requires the activation of cotransporters.

Remaining at rest requires decreased permeability of the membrane.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

A cell biologist is performing an experiment using the voltage clamp method in which they are allowed to change the voltage in the membrane potential. They are wanting to record potassium currents and notice that for a certain membrane potential range, the voltage clamp highlights that there is an inward current of potassium. Would these readings make sense?
At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron sends a signal, it opens sodium channels. What happens to the sodium when the sodium channels open? A. The sodium diffuses out of the cell. B. The sodium is pumped into the cell. C. The sodium is pumped out of the cell. D. The sodium diffuses into the cell.
Jose measures membrane potential in two neighboring cells. He notices that when the membrane potential changes in one cell, the membrane potential of the neighboring cell changes in a similar manner. For example, if one cell hyperpolarizes, the neighboring cell also hyperpolarizes. He concludes the cells are electrically coupled. Which of the following is the most likely to cause the electrical coupling? a.) The electrical coupling is most probably due to integrins that connect the two cells. b.) The electrical coupling is most probably due to tight junctions that connect the two cells. c.) The electrical coupling is most probably due to desmosomes that connect the two cells. d.) The electrical coupling is most probably due to gap junctions that connect the two cells.
describe what the resting membrane potential of a cell is. What is the resting membrane potential of neurons (give units)? What are the two factors that generate the resting membrane potential? Think of scenarios that change the factors that generate the resting membrane potential and how that would change the overall resting membrane potential.
Describe the contribution of each of the following to the establishment and maintenance of membrane potential: Part A Na+K+ Pump Passive movement of K+ across the membrane Passive movement of Na+ across the membrane Part B Resting membrane potential is approximately -70mV. Explain what resting membrane potential is and what -70mV refers to.
The presence of an electrical gradient is responsible for both the resting membrane potential and the action potential in the neuron.a. In this case who is responsible for maintaining the electric gradient to produce a potential for the resting membrane?b. Explain what is meant by an electrical gradient in the context of a cell (neuron)!
Which of the following statements is false regarding the directions that forces of the eletrochemical gradient are pointing for each ion. Assume the membrane of the neuron is at rest. A. For chloride ions the electrostatic and diffusion forces are pointing in opposite directions. B For sodium ions the eletrostatic and diffusion forces are pointing in the same direction. C. For potassium ions the eletrostatic and diffusion forces are pointing in opposite directions. D. All options choices are TRUE regarding the forces of the electrochemical gradient on each ion. E. For calcium ions the electrostatic and diffusion forces are pointing in opposite directions.
Why is the sodium-potassium pump indirectly important to the ac-tion potential and to maintaining the resting membrane potential?
Describe in detail what resting membrane potential is and what role the sodium/potassium leakage channels and the sodium-potassium pump play in maintaining this potential.
The primary difference between an EPSP and an IPSP is the a) overall speed b) degree of effect c) direction of membrane polarization d) ease of elicitation
In a resting neuron, which of the forces listed below will act to push sodium (Na+) ions into the cell? A. All of these answers are correct B. Force of diffusion C. Electrical force D. Sodium-potassium pump E. Osmotatic force F. Both A and B are correct
An effector neuron is a motor neuron that transmits impulses from the CNS to an effector (muscle or gland).In an experiment, it was determined that the effector neuron for muscle fibre 1 had a threshold level of –5 mV. The effector neuron for muscle fibre 2 had a threshold level of –16 mV. An electrical probe was used to stimulate these two effector neurons of the muscle fibres. Which of the following rows correctly identifies the reaction of each muscle fibre based on the applied stimulus voltage? Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –20 mV Relaxed Contracted b. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –20 mV Contracted Relaxed c. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –10 mV Contracted Relaxed d. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –10 mV Relaxed Contracted