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McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(also angiotonin, or angiotensin), a biologically active substance that increases blood pressure. Hyper-tensin is a polypeptide consisting of several amino acids. It is formed from a hypertensinogen that is present in blood plasma when the blood supply to the kidneys is insufficient. It is a component part of the renin-angiotensin system, which participates in regulating vascular tone. Analogues of natural hypertensin have been synthesized that are as active as it is.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.