Alcohol has several effects on the body. Here’s a breakdown of the options you provided:
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It decreases reaction time. - True. Alcohol impairs cognitive functions and motor skills, leading to slower reaction times.
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It lowers blood pressure. - This can be misleading. While moderate alcohol consumption can lead to temporary lowering of blood pressure in some individuals, excessive consumption can lead to increased blood pressure over time.
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It increases alertness. - False. Alcohol is a depressant, which generally decreases alertness and impairs cognitive function.
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It causes blood vessels to widen. - True. Alcohol can cause vasodilation (the widening of blood vessels), which can temporarily lower blood pressure but may lead to other cardiovascular issues with excessive consumption.
In summary, the significant effects of alcohol include decreased reaction time and vasodilation, while it does not increase alertness. Its effect on blood pressure can vary depending on the amount consumed.