obsolete corpus cardiacum innervating neuron CC/A-PI true Obsoleted as not clear from definition that this was a superclass only to CC/A-PI 1 (IPCs) and 2 (DMS cells) from FBrf0134726 and term has been misused in curation. FBbt:00051985 - 'larval ring gland projection neuron' is a better grouping term for where specific identity is unclear. fly_anatomy.ontology FBbt:00007463 Larval neurosecretory neuron whose soma is located in the pars intercerebralis and whose axon innervates the corpus cardiacum and the aorta. They each project caudally along the midline. At a distance of about 50 micrometres from the soma, the projection splits: one branch follows the midline down to the subesophageal ganglion, and the second branch crosses the midline, enters the contralateral nervus corporis cardiaci I (NccI), and arborizes in the corpus cardiacum, extending further along the aorta. CC/A-PI corpus cardiacum innervating neurosecretory neuron of the pars intercerebralis larval ring gland projection neuron