Which one of the following statements regarding alcohol (ethanol) is correct?Group of answer choicesIt crosses the placenta and may produce abnormalities in foetal development.It inhibits the action of GABAA receptors in the central nervous system.It acts as a stimulant in the central nervous system.It acts selectively at dopaminergic receptors in the central nervous system.
Question
Which one of the following statements regarding alcohol (ethanol) is correct?Group of answer choicesIt crosses the placenta and may produce abnormalities in foetal development.It inhibits the action of GABAA receptors in the central nervous system.It acts as a stimulant in the central nervous system.It acts selectively at dopaminergic receptors in the central nervous system.
Solution
The correct statement regarding alcohol (ethanol) is: "It crosses the placenta and may produce abnormalities in foetal development."
Alcohol is known to cross the placenta and can cause a range of developmental problems in the fetus, a condition known as Fetal Alcohol Syndrome. The other statements are incorrect. Alcohol does not inhibit the action of GABAA receptors, but rather enhances their function, leading to the depressant effects of alcohol. It does not act as a stimulant in the central nervous system, but as a depressant. Lastly, while alcohol does increase dopamine levels in the brain's reward system, it does not act selectively at dopaminergic receptors.
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