When you switch from lying down to standing up, which system or structure(s) is/are responsible for regulating the blood pressure in your head so that you don't faint?

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Quizplus · Accepted Answer

The autonomic nervous system is responsible for regulating blood pressure throughout the body, including in the head, when you change positions from lying down to standing up. This system automatically adjusts the heart rate, blood vessel constriction, and blood pressure to maintain blood flow to the brain and prevent fainting, a process known as orthostatic regulation.

When You Switch from Lying Down to Standing Up, Which