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NBME 17 Answers

nbme17/Block 1/Question#28 (10.5 difficulty score)
A 12-year-old boy is swimming in a mountain ...
Central blood volume: increased; ADH (vasopressin): decreased; Atrial natriuretic peptide: increased🔍
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Cold temperature: Causes peripheral vasoconstriction and central vasodilation

  • Increased central blood volume --> Lower ADH due to increased blood volume through kidneys
  • Increased central blood volme --> leads to atrial stretching, increased preload --> Increased ANP release
passplease  what organs are considered "central"? I initially thought that the kidneys would not be getting more blood with most of the blood flow going to the lungs and heart +