Repolarization occurs because Multiple Choice more sodium ions diffuse into the cell than potassium ions diffuse out of it. potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close.

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: Patch clamping is a technique to record the electrical potential or to measure currents generated by…

A: Tetrodotoxin is an extremely robust poison (toxin) discovered in particular within the liver and sex…

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: Which of the following describes a threshold potential?   A brief reversal of the charge difference…

A: Answer. All cells have an electrical potential difference, or membrane potential, across the plasma…

Q: Which of the following statements regarding action potentials is false? Na+ channel inactivation is…

A: 1. Na+ channel inactivation is due to a voltage-dependent block of the channel pore.This is true.…

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: 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: The diagram below shows some of the events that occur at a synapse after the arrival of an impulse…

A: Specialized cells in the brain called neurons transmit an action potential from one neuron to…

Q: Dr. Brainy creates a nerve cell that is only permeable to Caesium ions (Cs+1) at rest. She measures…

A: Option a: This option is incorrect because This value signifies that there's no driving force for…

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: You are recording the resting membrane potential from a neuron placed in a petri dish. The following…

A: The correct answer to this question is option C i.e. increase concentration of K+.

Q: Figure 1 shows a schematic of an action potential. How do voltage-gated sodium channels contribute…

A: A neuron can take input from the other neurons and, if the input is powerful enough, convey the…

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

A: Neuron or nerve cells are cells that act as messengers, they are able to undergo  electrical…

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

A:

Q: A channels opens a postsynaptic membrane that causes a negative ion to enter the cell. What type of…

A: Graded potentials are the short lived changes occurs according to the charge in the membrane. They…

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: 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: 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: Which channel membrane protein is specifically important in the process of neurotransmitter release…

A: Nerve impulse gets transmitted through the synapse. The main role to transfer the nerve impulse is…

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: Consider this graph: Membrane potential (mV) +40 -10 -60 02 4 6 8 10 Time (ms) During this phase…

A: Step 1:

Q: The neuroglia in the CNS comprise all these cells, EXCEPT Schwan cells Microglia Astrocytes…

A: Note: Question 2 is graded and so can't be answered!!  Introduction Glial cells, also known as…

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: When a neuron is a rest, the sodium ions flow through the membrane at a very low rate. Why is this?…

A: Ion channels are essential components of neurons that allow for the production and transmission of…

Q: Which of the following statements about voltage gated channels is true? Voltage-gated…

A: The action potential generates when a rapid rise and a subsequent fall in membrane potential occurs…

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: An action potential at a given stretch of a neuron's axon does not re-stimulate the neighboring…

A: Action potential It is defined as the rapid rise and subsequent fall in membrane potential across a…

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: 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: 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: Would anyone be able to explain these different channels? I would like an explanation as to why…

A: All ion channels are primarily located at their respective sites depending on their response to that…

Q: A person is given a drug that blocks the voltage-gated sodium ion channels in the plasma membrane of…

A: The Acetylcholine is one of the most vital neurotransmitter in the human body, that is seen in both…

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: 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: Which of the following would occur if you were measuring the voltage of a motor neuron that was…

A: They are regulated by inhibitory neurotransmitters such as glutamate and GABA. They prevent an…

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: 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…

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.