part of continuous with radial vein proximal radius 2018-10-23T08:50:03Z Region of the radial vein that is closest to the body of the fly (Cole and Palka, 1982). It is divided from the medial radius by an incomplete septum, radius septum 1 (Bryant, 1975; Cole and Palka, 1982). fly_anatomy.ontology FBbt:00047864 medial radius wing vein segment