loading...| Preferred Name | Ammon's horn | |
| Synonyms |
cornu ammonis hippocampus Ammon horn fields Ammons horn hippocampus proper ammon gyrus hippocampus proprius Ammon's horn hippocampus major ammon horn |
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| Definitions |
A part of the brain consisting of a three layered cortex located in the forebrain bordering the medial surface of the lateral ventricle. The term hippocampus is often used synonymously with hippocampal formation which consists of the hippocampus proper or Cornu Ammonis, the dentate gyrus and the subiculum. |
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| ID |
http://purl.obolibrary.org/obo/UBERON_0001954 |
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| capable of part of | ||
| database_cross_reference |
SCTID:361561007 VHOG:0001177 BIRNLEX:721 NCIT:C32374 MIAA:0000114 PBA:128012244 NCIT:C12444 EMAPA:32845 CALOHA:TS-0460 BTO:0003705 Wikipedia:Hippocampus neuronames:3157 MAT:0000114 UMLS:C0019564 EHDAA2:0004443 EFO:0000530 MESH:D006624 BAMS:CA BM:Tel-CAM DHBA:10296 DMBA:16124 EV:0100180 FMA:62493 GAID:623 MA:0000191 MBA:375 |
|
| definition |
A part of the brain consisting of a three layered cortex located in the forebrain bordering the medial surface of the lateral ventricle. The term hippocampus is often used synonymously with hippocampal formation which consists of the hippocampus proper or Cornu Ammonis, the dentate gyrus and the subiculum. |
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| depiction |
http://upload.wikimedia.org/wikipedia/commons/2/2e/Gray739-emphasizing-hippocampus.png |
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| external_ontology_notes |
Non-mammalian species do not have a brain structure that looks like the mammalian hippocampus, but they have one that is considered homologous to it. The hippocampus, as pointed out above, is essentially the medial edge of the cortex. Only mammals have a fully developed cortex, but the structure it evolved from, called the pallium, is present in all vertebrates, even the most primitive ones such as the lamprey or hagfish. The pallium is usually divided into three zones: medial, lateral, and dorsal. The medial pallium forms the precursor of the hippocampus. It does not resemble the hippocampus visually, because the layers are not warped into an S shape or enwrapped by the dentate gyrus, but the homology is indicated by strong chemical and functional affinities. There is now evidence that these hippocampal-like structures are involved in spatial cognition in birds, reptiles, and fish. In birds, the correspondence is sufficiently well established that most anatomists refer to the medial pallial zone as the 'avian hippocampus'. The story for fish is more complex. In teleost fish (which make up the great majority of existing species), the forebrain is distorted in comparison to other types of vertebrates: most neuroanatomists believe that the teleost forebrain is essentially everted, like a sock turned inside-out, so that structures that lie in the interior, next to the ventricles, for most vertebrates, are found on the outside in teleost fish, and vice versa. One of the consequences of this is that the medial pallium ('hippocampal' zone) of a typical vertebrate is thought to correspond to the lateral pallium of a typical fish. Several types of fish (particularly goldfish) have been shown experimentally to have strong spatial memory abilities, even forming 'cognitive maps' of the areas they inhabit.[WP] |
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| functionally related to | ||
| has_alternative_id |
UBERON:0003940 UBERON:0004165 |
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| has_exact_synonym |
hippocampus proper ammon gyrus hippocampus proprius Ammon's horn hippocampus major ammon horn |
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| has_obo_namespace |
uberon |
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| has_related_synonym |
cornu ammonis hippocampus Ammon horn fields Ammons horn |
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| has_relational_adjective |
hippocampal |
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| id |
UBERON:0001954 |
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| in taxon | ||
| in_subset |
http://purl.obolibrary.org/obo/uberon/core#efo_slim |
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| label |
Ammon's horn |
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| notation |
UBERON:0001954 |
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| part_of |
http://purl.obolibrary.org/obo/UBERON_0002421 |
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| prefLabel |
Ammon's horn |
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| treeView |
http://purl.obolibrary.org/obo/UBERON_0002421 |
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| mutually_spatially_disjoint_with | ||
| subClassOf |