Angiotensin I

Definition

Angiotensin I is an inactive precursor peptide hormone in the renin-angiotensin system that is converted to angiotensin II by the angiotensin-converting enzyme (ACE) primarily in the lungs. It plays a crucial role in regulating blood pressure and electrolyte balance.

Related terms

Renin:

An enzyme produced by the kidneys that starts the process of converting angiotensinogen to angiotensin I, crucial for blood pressure regulation.

Angiotensin: converting enzyme (ACE) - An enzyme that facilitates the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor involved in blood pressure control.

Blood Pressure:

The force exerted by circulating blood upon the walls of blood vessels, regulated by mechanisms including the renin-angiotensin system