part of part of in lateral side of superior colliculus layers of the superior colliculus optic lobe BTO:0000965 BIRNLEX:1040 BAMS:SC ZFA:0000445 tectum opticum corpora bigemina TAO:0000445 tectum XAO:0003226 DHBA:12292 Wikipedia:Superior_colliculus Part of the midbrain tecturm consisting of paired bodies that sit caudal to the thalamus and surround the pineal gland in the mesencephalon of vertebrate brains. It comprises the rostral aspect of the midbrain, posterior to the periaqueductal gray and adjacent superior the inferior colliculus. The inferior and superior colliculi are known collectively as the corpora quadrigemina (Latin, quadruplet bodies). It consists of several identified cellular layers and also comprises the brachium of the superior colliculus and commissure of supeior colliculus from Wikipedia.org and Neuronames (MM). ). In hagfish, lamprey, and shark it is a relatively small structure, but in teleost fish it is greatly expanded, in some cases becoming the largest structure in the brain. (See the adjoining drawing of a codfish brain.) In amphibians, reptiles, and especially birds it is also a very significant component, but in mammals it is dwarfed by the massive expansion of the cerebral cortex. GAID:576 FMA:62403 EFO:0002474 MA:0001068 HBA:9114 MESH:D013477 UBERON:0001945 BM:MB-Tec-SC tectal lobe DMBA:16678 AAO:0010609 anterior colliculus anterior corpus quadrigeminum EV:0100245 lobus opticus EMAPA:32869 dorsal midbrain cranial colliculus optic tectum corpora quadrigemina midbrain tectum regional part of brain visual processing part of nervous system lateral structure