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.
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1. any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels
(synonym) angiotonin, Hypertensin
(hypernym) vasoconstrictor, vasoconstrictive
(hyponym) angiotensin I
(classification) trade name, brand name, brand, marque
A family of peptides (smaller than proteins) that act as vasoconstrictors to narrow blood vessels.
A chemical that constricts
blood vessels, which raises blood pressure.
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