part of part of develops from develops from contributes to morphology of hindbrain fourth ventricle rhombencephalic vesicle CALOHA:TS-2015 AAO:0011043 4th ventricle DMBA:126651782 MA:0000196 ventricle of rhombencephalon NCIT:C12828 MESH:D020546 UBERON:0002422 EMAPA:16917 rhombencephalic ventricle BIRNLEX:1256 BM:Pons-4V GAID:610 SCTID:180932000 ZFA:0000110 DHBA:12805 fourth ventricle proper BAMS:V4 TAO:0000110 VHOG:0000006 EV:0100310 ventricle IV neuronames:621 Wikipedia:Fourth_ventricle Part of the ventricular system of the brain, forming a single large irregularly shaped cavity located on the midline of the rhombencephalon, between the medulla, pons and the isthmus ventrally and the cerebellum dorsally. It is continuous with the cerebral aqueduct anteriorally and the central canal of the spinal cord posteriorly. It communicates with the subarachnoid space through its lateral and median apertures. EHDAA:896 EHDAA2:0000100 IVth ventricle BAMS:4V BTO:0003426 MBA:145 FMA:78469 XAO:0003099 HBA:9421 brain ventricle hindbrain vesicle