What are truncus?

Some articles on truncus:

Truncus - Other
... Truncus (mathematics), a particular algebraic curve. ...
Persistent Truncus Arteriosus
... Persistent truncus arteriosus (or Truncus arteriosus), also known as Common arterial trunk, is a rare form of congenital heart disease that presents ... In this condition, the embryological structure known as the truncus arteriosus fails to properly divide into the pulmonary trunk and aorta ...
Truncus Arteriosus (embryology) - Developmental Abnormalies
... Failure of the truncus arteriosus to close results in the condition known as Persistent Truncus Arteriosus, or simply "Truncus arteriosus," one of many cyanotic heart defects or ... Other pathologies of the truncus arteriosus include transposition of the great vessels (arteries in this case), and tetralogy of Fallot ...