Angiotensin

Angiotensin is an oligopeptide in the blood that causes vasoconstriction, increased blood pressure, and release of aldosterone from the adrenal cortex. It is a powerful dipsogen. It is derived from the precursor molecule angiotensinogen, a serum globulin produced in the liver. It plays an important role in the renin-angiotensin system. Angiotensin was first isolated at the Cleveland Clinic.
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Angiotensin /an·gio·ten·sin/ a decapeptide hormone formed from the plasma glycoprotein angiotensinogen by renin secreted by the juxtaglomerular [more]Angiotensin - Community and Resources

Noun
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

n. angiotensin

A family of peptides (smaller than proteins) that act as vasoconstrictors to narrow blood vessels.