part_of part of part of overlaps overlaps adjacent to adjacent to adjacent_to contributes to morphology of retina uvea sclera optic choroid http://upload.wikimedia.org/wikipedia/commons/1/1e/Schematic_diagram_of_the_human_eye_en.svg ZFA:0005229 choroidal VHOG:0001568 EV:0100347 MP treats posterior uvea and optic choroid as distinct BTO:0001829 UBERON:0001776 TAO:0005229 NCIT:C12344 choroid posterior uvea eye choroid uberon FMA:58298 choroidea SCTID:181172003 Vascular layer containing connective tissue, of the eye lying between the retina and the sclera. The choroid provides oxygen and nourishment to the outer layers of the retina. Along with the ciliary body and iris, the choroid forms the uveal tract[WP]. chorioid MESH:D002829 Wikipedia:Choroid UMLS:C0008520 EMAPA:19077 MA:0000263 GAID:913 choroidea check choroid vs choroid layer; check ZFA/TAO placement - no homology assertion in VHOG. Note this is entirely in the posterior region of eyeball in ZFA CALOHA:TS-2054 optic choroid choroid coat posterior segment of eyeball vasculature of eye anterior uvea chorioretinal region