Angiotensin II Effects — FRCA Primary MCQ
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Correct answer: A — Arteriolar vasoconstriction with aldosterone release and sodium retention
The best answer is “Arteriolar vasoconstriction with aldosterone release and sodium retention”. Angiotensin II causes arteriolar vasoconstriction, stimulates aldosterone and ADH release, promotes thirst and increases proximal sodium reabsorption. It also enhances sympathetic activity and inhibits further renin release by negative feedback. These coordinated responses preserve extracellular volume rather than causing natriuresis or free-water clearance.
Reference: Royal College of Anaesthetists, Primary FRCA Syllabus 2021: https://www.rcoa.ac.uk/sites/default/files/documents/2026-01/Primary-FRCA-Syllabus.pdf