Which of the following takes place during an action potential? Na+ ions exit the cell causing depolarization Repolarization occurs when K+ ions enter the cell The membrane becomes more negative during depolarization K+ ions start the action potentials Na+ enters the cell making the membrane potential positive.

Q: In an excitable cell at rest, we expect to find ______ ions effluxing out of the cell through leak…

A: The cell is said to be at resting membrane potential when the cell potential is at rest, and the…

Q: In the figure to the left, name the 4 phases of the action potential (Note: you have to write in…

A: Hello! Since you have asked multiple questions, we will solve the first question for you. If you…

Q: When the membrane voltage shifts from the RMP to a more negative voltage; this is a_

A:

Q: A graded potential that achieves threshold leads to the generation of an action potential. Which one…

A: Graded potentials are made by outside stimuli in sensory neurons or by neurotransmitters discharged…

Q: If you inhibit the closing of sodium channels what do you predict the effect on neuronal function…

A: Action potential in neuron is the direct consequence of voltage gated sodium channel. During the…

Q: Dr. Brainy decides to make a new cell that ONLY has one ion channel in its membrane. This channel is…

A: Based on the conditions, let's evaluate the potential outcomes: Membrane potential approaching 0 mV:…

Q: The opening of axonal voltage-gated K+ channels is responsible for which part of the action…

A: Theses channels locate in cell membranes and control transportation of K +ions efflux from and…

Q: Which of the following describe(s) the difference(s) between an EPSP and an IPSP? Select all that…

A: The synaptic junction can be excitatory or inhibitory in nature depending upon the release of which…

Q: Which of the following statements is not true about neurons?   When there is no active nerve…

A: Neurons, specialized cells within the nervous system, play a vital role in transmitting electrical…

Q: Which phase in the generation of action potential is represented by N? +30 M N K -55 -70 Time…

A: Whenever a neuron is triggered by a stimulus, it experiences a brief shift in electrical potential…

Q: Imagine that a neuron has 5X higher sodium outside than inside and 10X higher potassium inside than…

A: The movement of the cell constituents inside and outside of the cell is mediated by  selectively…

Q: Which of the following is one major difference? [Choose ] Only action potentials cause…

A: There is difference in the concentration of ions inside and outside the each cell of body and this…

Q: Which is TRUE about neuronal membrane electrical and concentration gradients at the peak of the…

A: An action potential is sudden and transient changes in the voltage across a biological membrane. It…

Q: Which of the following describes the movement of the correct ion in the falling phase of the action…

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Q: Put the events for action potential generation in a neuron in the correct order (From 1-9)

A: Action potential generation is a fundamental process in neurons, allowing them to transmit…

Q: What membrane protein of the neuron is responsible for briefly increasing the Na+ permeability of…

A: Transporters refer to the membrane protein that transports the molecules and ions from outside of…

Q: The rising phase of the action potential is due to: O Na+ influx through voltage-gated Na+ channels.…

A: Introduction  An electrical signal called an action potential passes briefly over the membrane of a…

Q: Place the events involved in generating an action potential in the order in which they occur: 1. K…

A: Nervous system is a type of body system which is involved in control , coordination and transmission…

Q: Which of the following ion channels are always sensitive to small changes in electric charge?…

A: Transport through the cell membrane is important for cells to supply nutrients, ions, and other…

Q: Identify the stages involved during the changes in membrane potential of the neuron represented in…

A: Nervous system is an important system which helps in maintaining the homeostasis of the human body.…

Q: What happens to sodium channels and potassium channels during repolarization of a neuron? both…

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

Q: Action potential +40 -55 Threshold Falled initiations Resting state -70 Stimulus 1 Refractory period…

A: Every cell has a potential that is difference in the charge due to many factors one of them is…

Q: Tetraethylammonia, a toxin that blocks potassium channels, will More than one answer may be…

A: Introduction : There are three phases of action potential. These are depolarisation, repolarisation…

Q: Which of the following intracellular potentials would have the greatest electrical attraction for…

A: Cell Membrane potential is a potential slope that forces ion particles to move in one side. positive…

Q: that Causes 18 gates been opened to cause this?

A: Hyperpolarization :It is the movement of a cell membrane potential to a more negative value. When a…

Q: When a neurotransmitter binds with receptors at the membrane, it may cause sodium channels to open.…

A: The endogenous chemicals which makes neurons to communicate with each other throughout the body are…

Q: Which of the following BEST explains the inside negative potential in resting neurons? sodium flows…

A: This explanation is accurate because, in resting neurons, the membrane is primarily permeable to…

Q: After an action potential has been initiated, there are two processes that prevent the membrane from…

A: The generation of action potential is very much important characteristics in nerve cells that is…

Q: A patient is given a drug that blocks the L-Type calcium channel blocker. Which phase of the action…

A: Signal transduction pathways translate signals received at the cell's surface into cellular…

Q: Which two ideas about ion channels of a neuron at its resting potential are true? O ion channels are…

A: The movement of ions across the plasma membrane is responsible for maintaining the resting potential…

Q: A post-synaptic cell responds to an incoming signal by opening chloride gates. What will be the…

A: The synapses are the neuronal connections in the nervous system. The synaptic junction allows the…

Q: Membrane Potential (mV) -70 + 1 3 Time (ms) 1 Na* continues to rush into the cell E Excess…

A: The Na +K + pump is found in cell membrane of neurons as well as in other animal cells. It helps in…

Q: Select any statements that are NOT true when a neuron is at rest. Anions are attracted into the cell…

A: Neurons are the primary cells of the nervous system. These are highly specialized cells that…

Q: Which of the following is a voltage-gated channel?  L-type Ca2+ channel  M3  AChR  Beta 1 receptor…

A: The voltage-gated protein channels may respond to small changes in the dynamic membrane or…

Q: what will happen if the membrane channels opened and allowed a negatively charged ion such as…

A: NOTE: Options are numbered as 1, 2, and 3. Also, option 1 must be "action potential is less likely…

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: Immediately after an action potential is .34 propagated, which one of the following ions :rapidly…

A: Action potential of a neuron is caused due to a change in the cationic gradients - sodium and…

Q: Each of the following is a correct relationship between action potential phase and channel status…

A: BASIC INFORMATION NEURON   It is the longest cell inside the human body  It is found in the brain…

Q: Tetrodotoxin from pufferfish is a poison that blocks voltage-gated Na+ channels. Therefore it…

A: Tetrodotoxin (TTX) is a neurotoxin with high potency. Pufferfish, porcupinefish, ocean sunfish, and…

Q: Which mechanism consumes energy to move ions across the neuron cell membrane? sodium-potassium…

A: There are two types of transport mechanisms- active transport and passive transport. Active…

Q: Which ion channels are controlled by change in membrane potential?     Voltage-gated channels…

A: Membrane potential can be defined as the concentration of ions across the plasma membrane and their…

Q: When a membrane channel opens, there is a reduction in the membrane_ which generates allowing ions…

A: Resistance- Here resistance is implied as movement of ions across the membrane. During…

Q: What is responsible for action potentials propagating in one direction? The inactivation of voltage…

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

Q: Which of the following does NOT contribute to the establishment or maintenance of the neuron resting…

A: The neurons are nerve cells that carry impulses in the body, they are a crucial part of the nervous…

Q: Upon reaching electrical threshold, which of the following ion channels will open? Leak K+…

A: Neurons or nerve cells are the units of the nervous system. The parts of a neuron are dendrites,…