FuTRES Ontology of Vertebrate Traits

Last uploaded: May 31, 2023
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Id http://purl.obolibrary.org/obo/UBERON_0001769
http://purl.obolibrary.org/obo/UBERON_0001769
Preferred Name

iris
Definitions
The adjustable membrane, composed of the stroma and pigmented epithelium, located just in front of the crystalline lens within the eye.
Synonyms
anterior uvea
irides
irises
Type http://www.w3.org/2002/07/owl#Class

All Properties

label
iris
prefLabel
iris
database_cross_reference
ZFA:0001238
MESH:D007498
BTO:0000653
CALOHA:TS-0491
Wikipedia:Iris_(anatomy)
XAO:0000185
AAO:0010347
UMLS:C0022077
EFO:0004245
VHOG:0000101
TAO:0001238
NCIT:C12737
SCTID:181164000
EMAPA:19154
EV:0100345
FMA:58235
GAID:917
MA:0000273
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notation
UBERON:0001769
inSubset
has_related_synonym
anterior uvea
irides
irises
id
UBERON:0001769
hasOBONamespace
uberon
part_of
UBPROP_0000007
iridial
UBPROP_0000008
The avian iris and ciliary body undergoes a transition from smooth-to-striated muscle during embryonic development [DOI:dx.doi.org/10.1006/dbio.1998.9019]
UBPROP_0000001
The opaque muscular contractile diaphragm suspended in the aqueous humour in front of the lens of the eye. The organ is perforated by the pupil and continues peripherally with the ciliary body. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG]
UBPROP_0000003
The eye of the adult lamprey is remarkably similar to our own, and it possesses numerous features (including the expression of opsin genes) that are very similar to those of the eyes of jawed vertebrates. The lamprey's camera-like eye has a lens, an iris and extra-ocular muscles (five of them, unlike the eyes of jawed vertebrates, which have six), although it lacks intra-ocular muscles. Its retina also has a structure very similar to that of the retinas of other vertebrates, with three nuclear layers comprised of the cell bodies of photoreceptors and bipolar, horizontal, amacrine and ganglion cells. The southern hemisphere lamprey, Geotria australis, possesses five morphological classes of retinal photoreceptor and five classes of opsin, each of which is closely related to the opsins of jawed vertebrates. Given these similarities, we reach the inescapable conclusion that the last common ancestor of jawless and jawed vertebrates already possessed an eye that was comparable to that of extant lampreys and gnathostomes. Accordingly, a vertebrate camera-like eye must have been present by the time that lampreys and gnathostomes diverged, around 500 Mya.[well established][VHOG]
textual definition
The adjustable membrane, composed of the stroma and pigmented epithelium, located just in front of the crystalline lens within the eye.
RO_0002175
subClassOf
overlaps
develops_from
type
contributes to morphology of
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