arterial ligament
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lig·a·men·tum ar·te·ri·o·'sum
[TA]fibrous remnant of the ductus arteriosus extending between the aortic arch and the pulmonary trunk.
Synonym(s): arterial ligament, Botallo ligament
arterial ligament
a small, nonfunctional ligament attached to the superior surface of the pulmonary trunk and the inferior surface of the aortic arch. It is a vestige of the ductus arteriosus.
arterial ligament
A fibrous cord extending from the pulmonary artery to the arch of the aorta, the remains of the ductus arteriosus of the fetus.
See also: ligament