After a neuron fires an action potential, the lon concentration gradients are disrupted, What reestablishes the normal concentration gradient? O Influx of negatively charged ions into the cell Outtlow of K+ kons via passive fon channels Na+/K+ pump action O Outlow of Na ions via passive ion channels

Q: Which of the following is the most important contributor to the difference between the resting…

A: A membrane's voltage varies rapidly in a series known as action potentials.

Q: Voltage-gated sodium channels are open and allowing sodium to flow when: O The membrane is at the…

A: When the membrane potential of a particular cell site rapidly increases and decreases, an action…

Q: Positively charged ions flow out of the cell when voltage-gated _____ channels open.   A K+   B…

A: The potential difference between the inner and outer side of the cell membrane is called membrane…

Q: This patient's hypokalemia was due to his profuse sweating the previous day and the subsequent loss…

A: Potassium is a mineral, our body cells need this, it regulates our major body parts functions such…

Q: The trigger for an action potential is:

A: The potential difference across a membrane is known as the Membrane Potential. Frequent, rapid…

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: How can the resistance (Rm) of a membrane be increased? Increase conductance by opening ion channels…

A: A membrane resistance (Rm) is a measurement of how challenging it is for ions to cross the membrane.…

Q: During the cycling of neurotransmitters in the axon termini, the fusion of the neurotransmitter…

A: Neurotransmitters are chemical messengers that transmit signals across a chemical synapse, from one…

Q: DHP-Ryanodine receptors are: O Mechanically-gated O Voltage-gated O Always open O Ligand-gated…

A: Receptors-these are proteins present on the surface of cells that bind to ligands to cause responses…

Q: When a membrane is at rest, which channels are open? O Voltage-gated calcium channels O…

A: Neurons are the basic unit of the nervous system. The membrane potential of the neuron is…

Q: A neuron receives a series of stimuli that increases the membrane permeability of Na ', but not…

A: The nervous system is one of the vital systems of a body. It is a system of nerves which carry…

Q: Potassium flows the cell through leak channels, its gradient. into, down out of , up into , up out…

A: Generation of nerve impulse in nerve  fibre depends on distribution of sodium and potassium in and…

Q: Which ions are important in transmitting information along the axon of a neuron?     Ca2+ and Zn2+…

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

Q: Threshold is the minimum depolarization needed to________ Repolarize the membrane Open voltage-gated…

A: Neurons are the structural and functional unit of the nervous system that have the capability to…

Q: Which ion channel is open at the point beyond O? M N K - -55 -70 Membrane potential (mV)

A: K+ leak channels allow K+ ions to travel out of the cell freely according to the concentration…

Q: Which ion channel is responsible for the release of neurotransmitters from the presynaptic neuron?…

A: The synapse or “gap” is the place where information is transmitted from one neuron to another.…

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: eurons have a resting membrane potential of ___________________.   varying votage as type and…

A: The resting potential is mostly determined by the concentrations of the ions in the fluids on both…

Q: What determines the direction of ion movement through an ion channel? O The electrochemical gradient…

A: ION CHANNEL - ion channels are pore - forming membrane proteins that allow ions to pass through the…

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: Given that tissue A has significantly more K+ leak ion channels thantissue B, which tissue has the…

A: Resting membrane potential is considered a product of the ion distribution across the membrane and…

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: When is the charge inside a neuron at +40 millivolts? O during the refractory period O during the…

A: A membrane made up of a lipid bilayer with proteins incorporated in it surrounds all animal cells.…

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: 53. 55. Click Save and Submit to save and submit. Click Save All Answers to save all answe

A: The skeletal muscle:- It is the type of muscle attached to the bone; when they contract, they bring…

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: An inhibitory postsynaptic potential (IPSP) is associated with hyperpolarization a change in sodium…

A: A temporary hyperpolarization of the postsynaptic membrane generated by negatively charged ions…

Q: Reorder the items below to correctly label the numbers in the diagram. -55 2 Time (msec) | EPSPS,…

A: The signals are transmitted from one neuron to another through neurotransmitters. The…

Q: Describe the flow of ions in these cells in action potentials - skeletal muscle - neuron

A: The nervous system establishes its function by means of neurons or nerve cells that aid in the…

Q: A Membrane potential (V) +50 mV +25 mV Omv -25 mV -50 mV - Open - Closed - Open - Closed - Closed…

A: Answer :- The provided graph illustrates the current generated by a voltage clamp protocol through a…

Q: What does glutamic acid do to the membrane potentials of: Neurons - Muscles -

A: Glutamic Acid : It is an α amino acid which is used by all living beings & organisms in the…

Q: 1.A poison causes a drastic rise inE value with stimulation of the membrane.Thereafter membrane is…

A: Answers given in below step

Q: lon X has an equilibrium potential of Ex = -50 mV. At the resting membrane potential (-70mV), which…

A: Ions can move either way across a membrane but the direction of movement depends on membrane…

Q: Explain what is going on at sites A, B, C, D, F and G in relation to CHARGE (negative, positive,…

A: Action potentials are electrical impulses that neurons use to interact with one another. The…

Q: Once an action potential reaches a neurotransmitter release site, the release of the…

A: When an action potential reaches the end of an axon terminal, it triggers the opening of…

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: Which image represents depolarizing graded potential?

A: The depolarizing graded potential is most commonly seen due to the influx of Na+ and Ca+ ions into…

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: 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: What happens to the resting membrane potential if the extracellular K' concentration is increased.…

A:

Q: When sodium ion channels open, what happens to the cell's membrane potential? O hyperpolarization O…

A: All cells have an electrical potential difference or membrane potential across their plasma…