Which statement about EPSPs in the central nervous system is true?Group of answer choicesThey are much larger than end plate potentials.the istance between inputs does not affect the ability of EPSPs to summatethe time between inputs does not affect the ability of EPSPs to summateTheir effect in the central nervous system can be nullified by IPSPs.They can be hyperpolarizing.
Question
Which statement about EPSPs in the central nervous system is true?Group of answer choicesThey are much larger than end plate potentials.the istance between inputs does not affect the ability of EPSPs to summatethe time between inputs does not affect the ability of EPSPs to summateTheir effect in the central nervous system can be nullified by IPSPs.They can be hyperpolarizing.
Solution
The true statement about EPSPs (Excitatory Post Synaptic Potentials) in the central nervous system is: "Their effect in the central nervous system can be nullified by IPSPs (Inhibitory Post Synaptic Potentials)."
Here's why:
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EPSPs are not necessarily larger than end plate potentials. The size of these potentials can vary based on numerous factors.
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The distance between inputs can affect the ability of EPSPs to summate. If the inputs are too far apart, the EPSPs may not reach the threshold to trigger an action potential.
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Similarly, the time between inputs can also affect the ability of EPSPs to summate. If the inputs are too far apart in time, the first EPSP may have already decayed before the second one arrives, preventing summation.
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IPSPs can indeed nullify the effect of EPSPs. This is because IPSPs hyperpolarize the neuron, making it more negative and thus more difficult for EPSPs to depolarize the neuron to the threshold needed to trigger an action potential.
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EPSPs are not hyperpolarizing. They are depolarizing, meaning they make the neuron more positive and thus closer to the threshold needed to trigger an action potential.
Similar Questions
Which of the following are true regarding the differences between EPSPs and IPSPs? i. EPSP involves depolarisation of the postsynaptic membraneii. glutamic acid (glutamate) is a neurotransmitter involved in IPSPsiii. both of these chemical synapses occur in the CNSiv. when EPSPs occur at the neuromuscular junction, the endplate potential is always above threshold (an action potential is always triggered)v. Both EPSPs and IPSPs involve Na+ channels
If both IPSP's and EPSP's stimulate the same postsynaptic cell, which of the following is true? Multiple choice question.The postsynaptic cell will likely never fire because of the conflicting input.The response of the postsynaptic cell depends on which type of graded potential has a larger effect.Only one of the stimulus types determines the effect in the postsynaptic cell
Excitatory postsynaptic potentials (EPSPs) move the membrane potential threshold. Inhibitory postsynaptic potentials (IPSPs) move the membrane potential threshold.
Summation of EPSPs and IPSPs occurs at the __________Blank of the neuron.Multiple Choicetrigger zonedendritesaxon terminalsnodes of Ranvier
A medical student was studying the passive membraneproperties of neurons and their ability to affect the amplitudeof an EPSP recorded from the neuron. She found that inone neuron, applying two stimuli separated by 25 ms to onepresynaptic input induced two EPSPs of identical amplitude. Ina second neuron, the same type of stimulation induced an EPSPfollowed an action potential. What can she conclude from thisexperiment?A. The second neuron had a longer time constant than the firstneuron.B. The second neuron had a shorter time constant than the firstneuron.C. The second neuron had a longer length constant than the firstneuron.D. The second neuron had a shorter length constant than thefirst neuron
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