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conus arteriosus

[koh-nuh s ahr-teer-ee-oh-suh s] /ˈkoʊ nəs ɑrˌtɪər iˈoʊ səs/
noun, plural coni arteriosi
[koh-nahy ahr-teer-ee-oh-sahy, koh-nee ahr-teer-ee-oh-see] /ˈkoʊ naɪ ɑrˌtɪər iˈoʊ saɪ, ˈkoʊ ni ɑrˌtɪər iˈoʊ si/ (Show IPA).
Anatomy, Zoology
1.
the most anterior part of the simple tubular heart of lower vertebrates and embryos of higher vertebrates, leading into the artery that leaves the heart; in mammals it forms a part of the upper wall of the right ventricle, in which the pulmonary artery originates.
Also called conus.
Origin
1855-1860
1855-60; < Neo-Latin: literally, arterial cone. See arterio-, cone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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coni arteriosi in Medicine

conus arteriosus conus ar·te·ri·o·sus (är-tēr'ē-ō'səs)
n.
A conical extension of the right ventricle in the heart, from which the pulmonary artery originates. Also called arterial cone, infundibulum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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