If you inhibit the closing of sodium channels what do you predict the effect on neuronal function will be? If you inhibit the closing of sodium channels what do you predict the effect on neuronal function will be? Hyper-excitability: more sodium ions flow into the cell, causing neurons to fire more readily Hypo-excitability: more sodium ions flow into the cell, causing neurons not to fire as readily Less sodium is pumped out of the cell, slowing down return to the resting state Sodium ions are toxic to neurons, leading to cell proliferation

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: 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: The refractory period goes from "absolute" to "relative" when:   The inactivation gate of Na+…

A: Introduction: When the stimulus strength reaches at least reach the strength of threshold, there is…

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: "After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels…

A: Thank you for the question  Answer : If a second action potential can be generated it refers to as…

Q: Start by giving one, detailed sentence that describes the figures below. Then tell me what is…

A: An action potential is a characteristic pattern of quick rise and subsequent decline in voltage or…

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Q: In the resting state, before or long after an action potential occurs, the activation gates of…

A: Voltage-gated Na+ channels have three main conformational states: closed, open and inactivated.…

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: 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: If depolarization occurs at the neuromuscular junction and threshold is met, then…

A: If depolarization occurs at the neuromuscular junction and threshold is met, then, the…

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

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Q: When a neurotransmitter binds with receptors at the membrane, it may cause sodium channels to open.…

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Q: Which of the following BEST explains the inside negative potential in resting neurons? sodium flows…

A: This explanation is accurate because, in resting neurons, the membrane is primarily permeable to…

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

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Q: When they are not being stimulated, neurons have an electrical charge across their membranes called…

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

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Q: During the _____ phase of an action potential, the membrane potential is more positive than the…

A: Phases of generation of action potential from resting membrane potential  Depolarisation…

Q: The ions that most contribute to the voltage properties of the neuronal membrane are: chloride,…

A:

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

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Q: As the axonal membrane depolarizes during the rising phase of an action potential, the amplitude of…

A: During the rising phase of an action potential, the correct statement is:The amplitude of Na+…

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

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

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Q: Opening voltage-gated potassium ion channels will allow potassium ions to O enter, repolarization…

A: There are various potassium channels such as voltage-gated potassium channel, calcium-activated…

Q: Summation means that a post-synaptic neuron only has an action potential if:     there are no…

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Q: Select the correct term or phrase from the drop- down for each blank to complete the correct…

A: Generation of now impulse in naap fibres depends on distribution of sodium and potassium in and out…