conus arteriosus

American  

[koh-nuhs ahr-teer-ee-oh-suhs] / ˈkoʊ nəs ɑrˌtɪər iˈoʊ səs /

noun

Anatomy, Zoology.

plural

coni arteriosi

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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Etymology

Origin of conus arteriosus

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

Example Sentences

The ventricle passes anteriorly into what is clearly the homologue of the conus arteriosus of other forms.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" by Various

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

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" by Various

The sinus venosus is still a separate chamber, and the conus arteriosus, which may contain many or few valves, is usually divided into two by a spiral fold.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" by Various

There is a smooth, thin-walled sinus venosus, a thin reticulate-walled auricle, produced laterally into two appendages, a thick-walled ventricle, and a conus arteriosus containing valves.

From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" by Various