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

A:

Q: What will happen when ligand gated sodium channels open on a neuron? What will enter/exit the cell?…

A: Ligand-containing ion channels bind to neurotransmitters and are open to responding to ligand…

Q: Propagation of action potential and transmission mean:   current flow along the cell membrane…

A: Introduction: The action potential is the name given to the brief series of events that occur in 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: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

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 of the following occurs immediately after the peak of an action potential? The membrane…

A: Change in electrical potential related with the impulse entry along the membrane of a muscle cell or…

Q: Which of the following is not an excitatory ligand-gated ion channel? NACHR AMPAR ASIC GABA-AR

A: Neurons send electrical signals by generating and transmitting action potentials. Neurons have…

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: Consider the following graph of an action potential: 60- 30- membrane potential (mV) O -30- -60 line…

A: Action potential refers to the sudden rise and fall of membrane potential across a cellular membrane…

Q: Voltage-gated K+ channel senses voltage across the plasma membrane and  permits selective passage of…

A: A rapid and large changes in membrane potential of nerve cells during which the potential actually…

Q: Immediately after an action potential has peaked, which of the following channels is most likely to…

A: Channels show passive transport. During passive transport, ions move from high concentration to low…

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: 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: Graph an action potential, showing the change inelectrical potential on the y-axis and time on the…

A: Neurons communicate with each other and with the controlled organs by passing an electric current…

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: What is the relationship between the sodium-potassium pump and a neuron's resting membrane…

A: The sodium-potassium pump (Na,K-ATPase) was discovered in 1957. It is required for nerve…

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: +50 CD Membrane Potential (mV) -50- A -100 E Time -> O A OB

A: The communication of neurons with each other take place with the help of brief electrical signals…

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: 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: Which of the following represents amplification? O G protein activation by GPCR O Arrestin binding…

A: Signal transduction is the process by which a chemical or physical signal is transmitted through a…

Q: The interior of a neuron's plasma membrane at resting membrane potential will have a positive charge…

A: Membrane potential is also more commonly known as membrane voltage or transmembrane potential. It is…

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: 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: 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: 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: 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 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…