anatomical wall conjunctiva http://upload.wikimedia.org/wikipedia/commons/5/55/Gray883.png tunica conjunctiva AAO:0010343 GAID:898 MA:0000265 conjunctivas uberon wall of conjunctival sac XAO:0000182 conjunctivae NCIT:C12341 conjunctival BTO:0003415 CALOHA:TS-2232 UMLS:C0009758 EFO:0000374 UBERON:0001811 EMAPA:18233 FMA:59011 EV:0100340 MESH:A09.371.192 The mucous membrane that lines the inner surface of the eyelids and the front of the eyeball. ectoderm-derived structure