Excitatory postsynaptic potentials (EPSPs) move the membrane potential threshold. Inhibitory postsynaptic potentials (IPSPs) move the membrane potential threshold.

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

An excitatory postsynaptic potential (EPSP) occurs when neurotransmitters bind to their receptors and open chemically-gated ______ channels.Multiple choice question.sodiumpotassiumcalciummagnesium

IPSP is to EPSP as*excitatory is to inhibitorypresynaptic is to postsynapticcable properties are to noncable propertieshyperpolarization is to depolarizationgraded is to nongraded

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.