part of part of extends_fibers_into system cranial nerve II optic chiasma http://upload.wikimedia.org/wikipedia/commons/b/b3/1543%2CVisalius%27OpticChiasma.jpg https://cdn.humanatlas.io/digital-objects/ref-organ/brain-female/v1.4/assets/3d-allen-f-brain.glb https://cdn.humanatlas.io/digital-objects/ref-organ/brain-male/v1.4/assets/3d-allen-m-brain.glb chiasma opticum TAO:0000556 DHBA:10644 Wikipedia:Optic_chiasm A decussation of the diencephalon where the fibers of the optic nerve cross. MESH:D009897 AAO:0010622 BAMS:DC EMAPA:17603 The point at which fibers of the optic nerves cross.[AAO] SCTID:244453006 XAO:0004071 FMA:62045 HBA:9310 UMLS:C0029126 chiasma chiasma nervorum opticorum DMBA:17783 NCIT:C90609 MBA:117 UBERON:0000959 BAMS:ox BM:Tel-OCX EHDAA2:0001302 MA:0001098 GAID:832 neuronames:459 EHDAA:10227 ZFA:0000556 BIRNLEX:1416 optic chiasm (Rufus of Ephesus) decussation of optic nerve fibers optic chiasm VHOG:0000190 The chiasm has been studied in great detail in some animals, while in others relatively little or nothing is known. Although there are some gross architectural features that are conserved within some animals, such as birds and fish, the general picture is one of diversity. This review will attempt to consider the key features of such diversity of chiasmatic organisation in vertebrates and the mechanisms that sculpt them from the limited literature that is available. However, as so much research has been undertaken on the structure and development of the chiasm in laboratory animals, any review must consider the information that has been gleaned from them and hope that future studies will determine whether the features revealed in these animals, and the underlying mechanisms that generate them, have a common vertebrate plan.[uncertain][VHOG] BAMS:och BAMS:OC diencephalon optic tract neural decussation decussation of diencephalon