Tags: Protein.
Angiotensin is a peptide hormone that causes vasoconstriction and a subsequent increase in blood pressure. It is part of the renin-angiotensin system which is a major target for drugs that lower blood pressure. Angiotensin also stimulates the release of aldosterone another hormone from the adrenal cortex. Aldosterone promotes sodium retention in the distal nephron in the kidney which also drives blood pressure up.Angiotensin is an oligopeptide and is a hormone and a powerful dipsogen.