part of part of brain ventricle/choroid plexus brain ventricle EMAPA:32674 HBA:9418 One of the system of communicating cavities in the brain that are continuous with the central canal of the spinal cord, that like it are derived from the medullary canal of the embryo, that are lined with an epithelial ependyma, and that contain a serous fluid. region of ventricular system of brain neuronames:2497 brain ventricles NCIT:C12356 FMA:78447 BTO:0001442 MA:0000818 UBERON:0004086 SCTID:180929003 MESH:D002552 EFO:0001914 cerebral ventricle BIRNLEX:1356 ventricular system of brain ventricle of nervous system