aorticopulmonary septum


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aorticopulmonary septum

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.
References in periodicals archive ?
Abnormal cusp formation results either from aberrant fusion of the aorticopulmonary septum or from abnormal mesenchymal proliferation in the common trunk, clinically leading to a severe regurgitation [4, 10].
A second classification system was later described primarily based on the presence (type A) or absence (type B) of a VSD and development of the aorticopulmonary septum [2].