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conus arteriosus

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co⋅nus ar⋅te⋅ri⋅o⋅sus

  [koh-nuhs ahr-teer-ee-oh-suhs]
Use conus arteriosus in a Sentence
–noun, plural co⋅ni ar⋅te⋅ri⋅o⋅si  [koh-nahy ahr-teer-ee-oh-sahy, koh-nee ahr-teer-ee-oh-see] . Anatomy, Zoology.
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:
1855–60; < NL: lit., arterial cone. See arterio-, cone
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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co·nus ar·te·ri·o·sus   (kō'nəs är-tîr'ē-ō'səs)   
n.   pl. co·ni ar·te·ri·o·si (kō'nī är-tîr'ē-ō'sī, kō'nē är-tîr'ē-ō'sē)

  1. A conical extension of the right ventricle in the heart of mammals, from which the pulmonary artery originates.

  2. An extension of the ventricle in the heart of amphibians and certain fish.


[New Latin cōnus artēriōsus : Latin cōnus, cone + Medieval Latin artēriōsus, arterial.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: co·nus ar·te·ri·o·sus
Pronunciation: 'kO-n&-sär-"tir-E-'O-s&s
Function: noun
Inflected Form: plural co·ni ar·te·ri·o·si /-"nI-är-"tir-E-'O-"sI, -(")nE-/
: a conical prolongation of the right ventricle from which thepulmonary arteries emerge called also conus
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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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