part of continuous with embryonic/larval tracheal transverse connective 7 embryonic/larval spiracular tracheal branch embryonic/larval spiracular tracheal branch 7 An embryonic larval trachea whose lumen has collapsed, forming a solid cord and that is connected to the non-functional spiracle of A5 and transverse connective 7. SB7 fly_anatomy.ontology FBbt:00000321 FBbt:00000310 non-functional spiracular branch 7 non-functional spiracular tracheal branch non-functional larval spiracle of abdominal segment 5 tracheal metamere 7