Formation of angiotensin I is triggered by

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• ADHI
aldosterone
angiotensin Il
renin
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Answer 1

The formation of angiotensin I is triggered by renin. Renin is an enzyme released by the kidneys in response to low blood pressure, low sodium levels, or sympathetic nervous system activation. It catalyzes the conversion of angiotensinogen (a protein produced by the liver) into angiotensin I. Subsequently, angiotensin I is converted into angiotensin II by the action of the enzyme ACE (angiotensin-converting enzyme).