What must occur for a neuron to be polarized to resting membrane potential? O Na+/K+ pump moving 3 K+ outside cell and 2 Na+ inside cell; both ligand gated channels closed 4 O Na+/K+ pump moving 2 K+ outside cell and 3 Na+ inside cell; both mechanically gated channels closed O Na+/K+ pump moving 3 Na+ outside cell and 2 K+ inside cell; both voltage gated channels closed O Na+/K+ pump moving 2 Na+ outside cell and 2 K+ inside cell; both chemically gated channels closed

Q: Assume the membrane is only permeable to Na+ and K+, the electrical model of axon membrane is the…

A: A membrane potential is the electrical potential difference across a cell membrane. It is determined…

Q: +30 mV Threshold Potential Resting Potential Time Question: In the abnormal action potential (bottom…

A: Action potential  The excitation of neurones by the action of stimulus generates action potential.…

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

A:

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: 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: - In terms of Na and K ion gradient /movement - what causes the action potential (positive charge…

A: The Na+ K+ ion gradient refers to the concentration difference of sodium (Na+) and potassium (K+)…

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: Absolute refractory periods in axons: Result from conformational changes in voltage gated K channels…

A: The refractory period can be defined as the alternate rest period of muscles and neurons between two…

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: Excitatory neurons A and B both synapse with neuron C. Neuron A releasesa neurotransmitter, and…

A: The junction between two neurons is known as a synapse and when a neuron reaches its action…

Q: Sort the sequence of events happening during the establishment of a local potential

A: Chemical Messengers bind to Ligand Gated Sodium Channels > Ligand gated sodium channel opens>…

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: 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: mbing fiber depolarizes mbrane potential to en Ca2+ channels. tage-gated channel 2+ Ca²+ Release 2+…

A: The objective of the question is to identify the most direct mechanism causing the postsynaptic…

Q: If neurons fire action potentials when membrane potential reaches -50mV, how would hyperkalemia…

A: Hyperkalemia is a medical condition where there is an excess of potassium ions (K+) in the…

Q: Wriich of the lollowing thuices correctly ills in the blanks? During repolarization, the sodium ions…

A: The process of generation of action potential is a complex process and it involves three main phases…

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: 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: 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: At –70 mV consider the net effect of the chemical and electrical gradients in a neuron. Will more K+…

A: The potential of -70mV represents the resting membrane potential of the membrane of neurons. This…

Q: After a neuron fires an action potential, the lon concentration gradients are disrupted, What…

A: The neurons are the nerve impulse generating and transmitting cells in the nervous system. It is…

Q: At which point in the graph do voltage-gated potassium channels open? (Base your answer to this…

A: The action potential refers to the sudden changes in the resting membrane potential of the neuron…

Q: During the resting state, a neuron is: polarized with sodium ions outside the cell and potassium…

A: Introduction :  The fundamental component of the nervous system is the neuron. A cell body,…

Q: age-gated transient Ca++ channels (F) funny channels

A: In the graph the changes in the membrane potential has been mentioned that is the potential changes…

Q: Membrane permeability at the falling phase of an action potential is dominated by: O Co-transporters…

A: The neurons send signals over long distances by generating and propagating action potentials over…

Q: If the membrane permeability for Na+ were suddenly increased in an excitable cell: (select all that…

A: When the membrane permeability for Na+ is increased, Na+ ions will diffuse into the cell more…

Q: Which of the following describes the concentration of K+ and Na+ ions in and around a resting…

A: An action potential is an electrical signal that travels along the surface of a cell. This signal is…

Q: If the neuron is stimulated such that its membrane potential changes to 50 mV, what is the sign of…

A: The membrane potential is defined as the variance in electrical potential throughout the plasma…

Q: A membrane potential (Vm) labeled axis on the graph In the graph draw the phases of the action…

A: Introduction  Action potentials, those electrical impulses that go throughout your body, are nothing…

Q: C +40mV - 0- -40mV -60mV - А DE В 1 4 Stimulus Time (msec) Membrane potential

A: Introduction: The brief sequence of events in the membrane potential following excitation is…

Q: If K+ channels are blocked by TEA (tetraethyl ammonium), what happens to the equilibrium potential…

A: Potassium channels These are membrane proteins which allow rapid and selective movement of K+ ions.…

Q: rearrange these in the correct order of events in an action potential.

A: The process of impulse transmission involves two stages known as resting membrane potential and…

Q: The traces below show the action potential waveforms in an external meidum of different…

A: Nerve impulse refers to an electrical or chemical signal that is transmitted along a nerve fibre.…

Q: Difference in K* concentration across the PM pressure potential Both Difference in K+ concentration…

A: Resting membrane potential is the normal potential of the membrane it is negative inside and…

Q: An action potential Membrane potential (mV) -40 40 -65 II -80 0 -Overshoot Rising Falling phase…

A: Answer.  Voltage-gated sodium channel are inactivated and locked at point III. Option (b) is…

Q: A very high amount of 1 2 channels to open. There ions and calcium ions, as well as an efflux of 4…

A: Nerve impulses are transmitted through the neurons. The electrical charge distribution across the…

Q: State

A: Action potential:- The change in electrical potential associated with the passage of an impulse…

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

A: The nervous system is the network of control and coordination in the body. The stimulus received by…

Q: Which ion channel is open at phase K? M N K - -55 -70 Time Voltage-gated ion channel specific to…

A: The graph represents the phases of action potential . Action potential is the change in the membrane…

Q: The options for all 8 are either:  Depolarization, Na+ influx into cell Vm=-70mV inactivation of…

A: Neurons are the structural and functional unit of nervous system that is responsible for nerve…