continuous with adult tracheal section adult tracheal dorsal trunk adult dorsal tracheal branch transverse dorsal commissure dorsal anastomose fly_anatomy.ontology Adult trachea that branches dorsally from the dorsal trunk. It tracheates the dorsal epidermis and dorsal vessel. Each dorsal branch connects the left and right dorsal trunks of the same tracheal metamere via the dorsal anastomosis. In the thorax, the dorsal branches connect the parenteric air sacs, which correspond to the enlarged dorsal trunks. FBbt:00003051 tracheal branch