medium · MCAT bio-biochem

A hiker is stranded in a desert for 12 hours without water, losing significant volume through sweating.

Which hormonal profile would most likely be observed in their blood sample to maintain homeostasis?

  1. High levels of Calcitonin and low levels of Aldosterone.
  2. High levels of ADH and low levels of Angiotensin II.
  3. High levels of ADH (vasopressin) and high levels of Aldosterone.
  4. Low levels of ADH and high levels of Atrial Natriuretic Peptide (ANP).

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