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conus arteriosus

[ koh-nuhs ahr-teer-ee-oh-suhs ]

noun

, Anatomy, Zoology.
, plural co·ni ar·te·ri·o·si [koh, -nahy ahr-teer-ee-, oh, -sahy, koh, -nee ahr-teer-ee-, oh, -see].
  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.


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Word History and Origins

Origin of conus arteriosus1

1855–60; < New Latin: literally, arterial cone. See arterio-, cone
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Example Sentences

The conus arteriosus too begins to be divided into two chambers, and in Protopterus this division is complete.

In the snake the conus arteriosus is very much shortened and is not visible.

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CONUSconv.