Which mechanism explains why some individuals with long-standing hypertension exhibit a blunted heart rate response to sudden drops in blood pressure upon standing?

💡 Explanation

Baroreceptor desensitization occurs because chronic hypertension causes sustained stretching of arterial walls, leading to a decreased responsiveness of the baroreceptors. Therefore, the heart rate fails to increase adequately upon standing, rather than other mechanisms that might influence blood pressure under different conditions.

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