medium · MCAT bio-biochem
A patient with severe dehydration is likely to exhibit which of the following physiological responses to maintain blood pressure and volume?
- Increased GFR from renal vasodilation to clear metabolic wastes faster.
- Marked dilation of afferent arterioles, sharply raising renal blood flow and filtration.
- Increased secretion of Antidiuretic Hormone (ADH) leading to concentrated urine.
- Decreased Aldosterone secretion overall, reducing renal sodium and water retention markedly.
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