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aorticopulmonary septum


Definition: a septum dividing the embryonic bulbus cordis and truncus arteriosus into pulmonary and aortic outflow tracts from the developing heart; the distal part of the septum is derived from the right and left endocardial cushions and so separates the pulmonary and aortic orifices; the proximal part of the septum is that portion of the septum incorporated into the membranous part of the interventricular septum.

Synonym(s): spiral bulbar septum, spiral septum

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.