JSON

iris

^ http://purl.obolibrary.org/obo/UBERON_0001769

The adjustable membrane, composed of the stroma and pigmented epithelium, located just in front of the crystalline lens within the eye. [ MP:0001322 http://openisbn.com/search.php?q=0-683-40008-8&isbn=1/ ]

Term info

database cross reference
  • EMAPA:19154
  • ZFA:0001238
  • CALOHA:TS-0491
  • MA:0000273
  • Wikipedia:Iris_(anatomy)
  • GAID:917
  • MESH:D007498
  • BTO:0000653
  • TAO:0001238
  • XAO:0000185
  • FMA:58235
  • VHOG:0000101
  • UMLS:C0022077 (ncithesaurus:Iris)
  • AAO:0010347
  • EFO:0004245
  • SCTID:181164000
  • EV:0100345
  • NCIT:C12737
Subsets

uberon_slim, efo_slim, pheno_slim, vertebrate_core, human_reference_atlas

plural term
irises [ VHOG:0000101 ]

plural term
irides

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]

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]

has related synonym

anterior uvea, irises, irides

id

UBERON:0001769

prefLabel

Iris

present in taxon

http://purl.obolibrary.org/obo/NCBITaxon_9606