conus arteriosus

American  

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

noun

Anatomy, Zoology.

• coni arteriosi
  plural

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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Other Word Forms

Noun Inflected Forms

• coni arteriosi
  plural

Etymology

Origin of conus arteriosus

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

Example Sentences

See Examples For:

conus arteriosus

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

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