Iris (anatomeg): Gwahaniaeth rhwng fersiynau
Cynnwys wedi'i ddileu Cynnwys wedi'i ychwanegu
BDim crynodeb golygu |
BDim crynodeb golygu |
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Llinell 1:
{{Infobox anatomy|Name=Iris|name=Iris|Image=Human_Iris_JD052007.jpg|image=Human_Iris_JD052007.jpg|Caption=<span style="font-size: 9pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">Iris ydy’r rhan las neu
frown, â channwyll y llygaid yn ei ganol ac a amgylchynir gan y sglera gwyn. Mae
gorchudd y llygad, sef y gornbilen, yn hollol dryloyw ac yn anweledig. Gwelir y pibellau gwaed yn y sglera yn hawdd. </span><o:p></o:p>|caption='''Iris''' is the blue or brown area, with the [[pupil]] (the circular black spot) in its center, and surrounded by the white [[sclera]]. Overlying [[cornea]] is completely transparent so is not visible, except the high-gloss luster it gives the eye. Also pictured are the red blood vessels within the sclera. These structures are easily visible on any person's eyes.|Image2=Schematic diagram of the human eye en.svg|image2=Schematic diagram of the human eye en.svg|Caption2=Schematic diagram of the human eye. (Iris labeled at upper right)|caption2=Schematic diagram of the human eye. (Iris labeled at upper right)|artery=[[long posterior ciliary arteries]]|Artery=[[long posterior ciliary arteries]]|nerve=[[long ciliary nerves]], [[short ciliary nerves]]|Nerve=[[long ciliary nerves]], [[short ciliary nerves]]|precursor=[[Mesoderm]] and [[ectoderm|neural ectoderm]]|Precursor=[[Mesoderm]] and [[ectoderm|neural ectoderm]]|MeshName=Iris|Meshname=Iris|MeSHname=Iris|MeshNumber=A09.371.894.513|Dorlands=four/000054876|DorlandsID=Iris|GraySubject=225|GrayPage=1012}}Mae’r iris yn strwythur tenau a chrwn yn y [[llygad]], sy’n rheoli diamedr a maint cannwyll y llygad, ac felly faint o olau sy’n cyrraedd y retina. Lliw yr iris ydy lliw y llygad. Yn optegol, agorfa’r [[llygad]] ydy cannwyll y llygad, ac y diaffram ydy’r iris.
== References ==
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