continuous with embryonic/larval dorsal tracheal branch 1 cephalic tracheal branch dorsal cephalic tracheal branch forward branch of large anterior dorsal commissure FBbt:00000398 DC Embryonic/larval trachea that branches anteriorly from dorsal branch 1. In the late stage 14 and 15, the dorsal branch begins to branch and forms four or more terminal branches that tracheate the epidermis and muscles of the dorsal and lateral head. fly_anatomy.ontology