Renin-Angiotensin-Aldosterone System (RAAS)
Effects The RAAS is activated in the presence of low blood pressure, decreased blood volume, hyponatremia, and sympathetic activation. Main actions: mediated via angiotensin II: Vasoconstriction Blood pressure increase Release of catecholamines Hypertrophy at the heart Mediated via aldosterone: Water and sodium ions are retained Potassium ions and protons are eliminated Overview of the RAAS … Renin-Angiotensin-Aldosterone System (RAAS)