aortopulmonary septum

synonym: aorticopulmonary septum
https://doi.org/10.1351/goldbook.10419

Spiral septum that, during development, separates the truncus arteriosus into a ventral pulmonary trunk and the ascending aorta dorsally.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 725 [Terms] [Paper]