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angiotensin

American

[an-jee-oh-ten-sin] / ˌæn dʒi oʊˈtɛn sɪn /

noun

Biochemistry.

any of three oligopeptides occurring in plasma, an inactive form angiotensin I and two varieties angiotensin II and angiotensin III that elevate blood pressure and stimulate the adrenal cortex to secrete aldosterone.

angiotensin British

/ ˌændʒɪəˈtɛnsɪn /

noun

a peptide of physiological importance that is capable of causing constriction of blood vessels, which raises blood pressure

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

angiotensin Scientific

/ ăn′jē-ō-tĕn′sĭn /

Any of three polypeptide hormones that function in the body in controlling arterial pressure. The most important is known as angiotensin II, a powerful vasoconstrictor that stimulates steroid production by the adrenal glands, reduces fluid loss from the kidneys, and also functions as a neurotransmitter. Angiotensin II is formed from inactive angiotensin I by the action of angiotensin-converting enzyme (or ACE).
See also ACE inhibitor renin

Etymology

Origin of angiotensin

1960–65; probably blend of angiotonin + hypertensin , earlier names for the substances

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

angiotensin

Angiotensin II constricts blood vessels, raising blood pressure, while angiotensin 1-7 relaxes blood vessels, lowering blood pressure.

From Science Daily ● Mar. 28, 2024

They block the formation of the hormone angiotensin II, which plays a central role in the development of high blood pressure.

From Science Daily ● Jan. 31, 2024

However, the protein also negatively regulates the renin-angiotensin system which generates angiotensin II, a hormone that raises blood pressure in a number of ways, including by the constriction of blood vessels.

From Science Daily ● Oct. 24, 2023

How would you complete this diagram to make it an accurate model of the renin- angiotensin system?

From Textbooks ● Jun. 9, 2022

Renin, which is secreted by part of the juxtaglomerular complex, acts on angiotensin to form angiotensin II, which is then converted to angiotensin I by ACE.

From Textbooks ● Jun. 9, 2022

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023