midbrain diencephalon http://upload.wikimedia.org/wikipedia/commons/5/54/EmbryonicBrain.svg interbrain EMAPA:16896 thalamencephalon Unpaired part of the forebrain comprised of three major parts; the epithalamus, thalamus, and hypothalamus.[AAO] AAO:0010481 TAO:0000101 XAO:0000013 UBERON:0001894 uberon EFO:0000911 in ABA, this is part of the brain stem BAMS:DI DiE The more posterior and ventral of two forebrain neuromeres, the other being the telencephalon; major derivatives are the eye cups, the brain pretectal region, the thalamus, hypothalamus, and epithalamus (including the habenula and epiphysis). Kimmel et al, 1995.[TAO] MBA:1129 BAMS:DiE UMLS:C0012144 EV:0100194 GAID:618 ZFA:0000101 MESH:D004027 mature diencephalon BAMS:IB EHDAA:1969 MAT:0000420 DHBA:10389 BAMS:Di DMBA:16308 FMA:62001 EHDAA:3472 The division of the forebrain that develops from the foremost primary cerebral vesicle. PBA:128013010 betweenbrain HBA:4391 BIRNLEX:1503 diencephalic between brain Fine structural, computerized three-dimensional (3D) mapping of cell connectivity in the amphioxus nervous system and comparative molecular genetic studies of amphioxus and tunicates have provided recent insights into the phylogenetic origin of the vertebrate nervous system. The results suggest that several of the genetic mechanisms for establishing and patterning the vertebrate nervous system already operated in the ancestral chordate and that the nerve cord of the proximate invertebrate ancestor of the vertebrates included a diencephalon, midbrain, hindbrain, and spinal cord.[well established][VHOG] BTO:0000342 MIAA:0000420 diencephalon MA:0000171 neuronames:288 CALOHA:TS-0199 EHDAA:2645 BM:Die Wikipedia:Diencephalon SCTID:279328001 EHDAA2:0000385 BAMS:Zh. NCIT:C12456 VHOG:0000318 hindbrain regional part of brain