Assume that excessive consumption of ethanol increases the influx of negative chloride ions into commonsense neurons whose action potentials are needed for you to act appropriately and not harm yourself or others. Thus, any resulting poor decisions associated with ethanol ingestion are likely due to

SYNAPTIC PHYSIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Assume that excessive consumption of ethanol increases the influx of negative chloride ions into “commonsense” neurons whose action potentials are needed for you to act appropriately and not harm yourself or others. Thus, any resulting poor decisions associated with ethanol ingestion are likely due to

A	more action potentials in your “commonsense” neurons
B	more EPSPs in your “commonsense” neurons
C	increased membrane hyperpolarization of “commonsense” neurons
D	fewer IPSPs in your “commonsense” neurons

Explanation:

Detailed explanation-1: -Voltage-gated ion channels regulate the relative concentrations of different ions inside and outside the cell. The difference in total charge between the inside and outside of the cell is called the membrane potential.

Detailed explanation-2: -The correct answer is c. An action potential, once started, cannot be stopped or negated.

Detailed explanation-3: -First is depolarization, followed by repolarization and a short period of hyperpolarization. These three events happen over just a few milliseconds.

Detailed explanation-4: -The neurotransmitter diffuses across the synaptic cleft and binds to ligand-gated ion channels in the postsynaptic membrane, resulting in a localized depolarization or hyperpolarization of the postsynaptic neuron.

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