s ahr-teer-ee-oh-suh
s]
. 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. |
co·ni ar·te·ri·o·si (kō'nī är-tîr'ē-ō'sī, kō'nē är-tîr'ē-ō'sē) n. Plural of conus arteriosus. |
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.