part of continuous with adult pharyngeal nerve cibarial sense organ dorsal cibarial sense organ fulcral organ FBbt:00004140 fly_anatomy.ontology cibarial sense organ DCSO This term corresponds to the cibarial sense organ as used by Miller in Demerec (1994) and to the fulcral organ as used by Hertweck (1931). CSO Dorsal-most cibarial sense organ near the upper end of the posterior cibarial plate of the adult pharynx, and innervated by the pharyngeal nerve. It comprises two sensilla (anterior and posterior), each containing three gustatory receptor neurons. posterior plate of cibarium