Why does an action potential flow in only one direction? because voltage-gated sodium channels inactivate once the membrane is depolarized because all action potentials start at the cell body (soma) O because myelin keeps the AP going in one direction O because potassium channels stay open longer, returning the cell to resting membrane potential

Q: When EPSP and IPSP occur simultaneously the postsynaptic membrane :-a- becomes depolarizedb- becomes…

A: EPSP refers to Excitatory Postsynaptic Potentials and IPSP refers to Inhibitory Postsynaptic…

Q: Which refers to the time during which a neuron can undergo an action potential? O the resting…

A: Nervous system is one of the most important system of our body it send and receive information via a…

Q: Which of the following would you predict would happen if you limited the amount of ATP to a neuron…

A: We have Na+/K+ ATPase channel that uses ATP to translocate 3 Na+ outside and 2 K+ outside which…

Q: Which statement(s) regarding ions is true when a neuron is at rest? Positively charged cations are…

A: Neurons are also known by the name nerve cells. These cells are referred to as the fundamental units…

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: oltage-gated channels open only when the membrane potential depolarizes at least up to a O threshold…

A: The action potential travels down the axon as voltage-gated ion channels are opened by the spreading…

Q: Why are action potentials usually conducted in one direction?(A) Ions can flow along the axon in…

A: An action potential is defined as the sudden, fast, transitory, and propagating change in electrical…

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: An action potential is shown below. Number 4 on the graph is showing which phase? 3 Membrane…

A: Action potential is a brief reversal of membrane potential where the membrane potential changes from…

Q: What is occurring during the repolarization phase of an action potential? O Voltage-gated…

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

Q: Compare and contrast graded potentials and action potentials. What are the functions of graded…

A: In animal cells, the plasma membrane expresses several types of ion channels that participate in the…

Q: Which precedes an action potential traveling down the axon of a neuron? A. Neurotransmitters bind to…

A: The right Answer is A

Q: postsynaptic potential (EPSP) in it. O D. bind to neurotransmitter receptors on the postsynaptic…

A: Synapse is the area of the junction between the two Nerve cells in which the first nerve cell from…

Q: A change in the voltage across a neuron’s plasma membranethat makes the neuron less likely to fire…

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: The difference in charges across the plasma membrane of anunstimulated neuron is calleda. an EPSP.b.…

A: A neuron refers to the structural and functional unit of the nervous system which is involved in the…

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: Refers to the temporary time in which a neuron cannot be stimulated resting potential O refractory…

A: refractory period.

Q: At a chemical synapse, an action potential triggers an influx of Ca2+ which . Select one: O A.…

A: When the action potential reaches the presynaptic neuron terminal, it activates the voltage-gated…

Q: An action potential begins when______ . a. a neuron reaches threshold potential b. voltage-gated…

A: Answer is a.) a neuron reaches threshold potential.

Q: Would it be possible to generate a single action potential immediately after adding a chemical that…

A: Sodium potassium pump is major electrogenic pump in animal. It carry out 3 sodium outside the cell…

Q: Ordinarily, a neuron’s trigger zone is activated before any other part ofan axon, so a wave of…

A: Nerve cells are electrically excitable cells that method and transmits information by electrical and…

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: Which of the following occurs first when voltage reaches the threshold level in a neuron plasma…

A: Ans: The potential is generated in the neuron or plasma membrane due to difference in 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: Which of the following best describes saltatory conduction? A process in myelinated axons where the…

A: In contrast to the slow continuous process of depression extending down an unmyelinated axon,…

Q: What do graded and action potentials have in common? O Both cover great distances. O Both may be…

A: The membrane potential is a term used to describe the difference between the electric potential of…

Q: Following release of a neurotransmitter and binding to a receptor, what is the next step in the…

A: Neurotransmitters are the secondary chemical messengers that help in the transit of messages…

Q: When summation of multiple graded synaptic potentials occurs which of the following would…

A: Post synaptic potentials or PSPs are called excitatory (or EPSPs) in case they increase the…

Q: When a postsynaptic neuron is adequately stimulated, action potentials develop at the initial…

A: A neuron is a basic functional unit of the nervous system. It is a complex network of specialized…

Q: If a neurotransmitter binds to a receptor that opens potassium channels, the result is ... Group of…

A: Postsynaptic potentials refer to the alteration in the postsynaptic terminal’s membrane potential of…

Q: What would happen to the resting membrane potential of a neuron if sodium (Na+ ) channels were…

A: Introduction:- Because Na +  is normally present at a much higher concentration outside of a cell…

Q: The part of the neuron that is usually highly branched and receives input from other neurons is the…

A: Neurons are a particular form of cell that carry information messages or signals to and from the…

Q: In order to trigger an action potential, a local potential must be above this when it reaches the…

A: Neurons are the basic unit of the nervous system that carry electrical stimuli throughout the body.…

Q: You add an inhibitor to the voltage-gated K+ channel and then stimulated a nerve cell to cause an…

A: The nerve cells or neurons shows electrical properties that helps the neurons to conducting the…

Q: During the rising portion of the action potential, which ions are moving across the membrane and in…

A: Action potential exhibits the potential difference across the membrane of a neuron.

Q: During a relative refractory period of an action potential   A. Another action potential can be…

A: Action potential (AP) is the mode through which a neuron transports electrical signals. It is…

Q: What type of interaction is occurring at the trigger zone between two graded potentials arriving…

A: Action potential : As the signals are passed through the neurons, a massive increase in membrane…

Q: Neurons have an electrical charge across their membranes called the resting potential when they are…

A: Answer : Neurons have an electrical charge across their membranes called the resting potential when…

Q: Neurons have an electrical charge across their membranes called the resting potential when they are…

A: The nerve system and the hormonal system work together to regulate and coordinate the human body.…

Q: IPSP differs from EPSP in :-a- being of shorter durationb- being unable o summate spatiallyc- moving…

A: Signal conducted at the synaptic terminal of neuron (presynaptic neuron) connected to the dendrites…

Q: Which of the following is FALSE about action potentials?      At resting potential, there are more…

A: Change in the membrane potential are brought about by changes in ion movement across the membrane.…

Q: You apply a drug to a batch of neurons and record membrane potential changes in the presynaptic and…

A: Here membrane potential raises from -70mv to - 55mv.  That means depolarization occurs.  At…

Q: When a graded potential summates to threshold at the axon hillock, O ligand-gated Ca+2 channels…

A: The rapid change in membrane potential is known as an action potential. It is governed by the…

Q: Fill in the blank:  An action potential is a rapid sequence of changes involving…

A: Action potential (AP) is the mode through which a neuron transports electrical signals. It is…

Q: An action potential travels down a neuron: From dendrite to axon terminals Moves even faster because…

A: Nervous system is defined as the complex network of nerves and nerve cells that play a major role in…

Q: A myelinated axon conducts nerve impulses at a speed of 40 m/s. If the myelination made the speed of…

A: Neuron:  A neuron, also known as a nerve cell, is an electrically excitable cell that communicates…

Q: A post-synaptic cell receives a signal that causes it to hyperpolarize. Which statement is NOT true…

A: Action potentials are nerve messages. Neurons produce and convey these signals through their…

Q: "The local anesthetic, novacaine, used by most dentists blocks voltage-gated Na+ channels. Why would…

A: Thank you for the question : Answer : The effect of the local anesthetic novacaine blocks voltage…

Q: Many neurotransmitters trigger depolarisation by binding their receptors and gating an ion channel…

A: Answer: Neurons are like electrical devices, having many channels sitting in the cell membrane(the…

Q: What happens when a resting neuron’s membranedepolarizes?(A) There is a net diffusion of Na+out of…

A: The membrane potential is the net voltage on the membrane of a neuron. The difference in the charge…

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.