Iris. Izici isakhiwo ehlweni lomuntu

Iris ingxenye anterior we choroid. Kuyinto mncane kakhulu ingxenye neuropathy ke. Yena ciliary (ciliary) umzimba futhi choroid   kukhona izingxenye ezintathu eziyinhloko ipheshana semithambo, kwakheka inkathi ezine kuya kweziyisishiyagalombili wokukhula kwengane esiswini.

Kumiswa iris is emhlabeni ngesonto nesikhombisa endaweni lapho emaphethelweni okuthiwa inkomishi optic kuyinto "superposition" we-mesoderm. Ngenyanga yesihlanu sphincter iris Kumiswa - imisipha obangela ukwehla ngobukhulu umfundi. Ngemva nje kancane kwalokho kukhona dilator. Lena imisipha yangaphakathi kamuva sizonikeza isandiso. Ngenxa ukuxhumana obunobunye ngalokuyincenye phakathi diaphragm sphincter futhi dilator iris wenza umsebenzi ngempumelelo ulawula ukugeleza amazwi kaPawulu angena ajule ukukhanya ugongolo. Ngu ngenyanga yesithupha bakheké ngokuphelele ezingemuva pigmentary izicubu EPITHELIAL. Lokhu kuphetha kumiswa izinqubo eyisisekelo ohlelweni.

Ngaso leso sikhathi ukuxhumana ngqo cornea iris we iso womuntu asipheli. Phakathi kwaso udonga lwangaphandle kokushiya isikhala esincane - ngaphambili ekamelweni eligcwele aqueous (ekamelweni) umswakama.

iris Sheer ine uhlobo esiyindilinga ungcwecwe ngengxube ubukhulu cishe nambili amamilimitha angu kanye azungezwe mayelana amathathu nesishiyagalombili amamilimitha angu. Maphakathi nalo kuyinto ukuvulwa isiyingi lapho ukukhanya lingena - Umfundi. Nguye esetshenziswa ukulawula inani imisebe ngokufaka iso. usayizi umfundi kuncike degree sokukhanyisa. I ezincane round umshayo, siyoba sikhulu ubukhulu bayo. Inani layo isilinganiso imayelana amathathu kwangu. Ngesikhathi esifanayo abantu abasha umfundi ubukhulu ngokuvamile lithé ukuba likhudlwana kune asebekhulile. Lokhu kuchazwe iqiniso lokuthi ngokuhamba kwesikhathi kukhona yoma we dilator futhi sphincter cystic.

I izakhiwo eyinhloko emehlweni isici njengoba iris, kukhona umbala, iphethini, isimo umfundi beso nendawo isihlobo kwezinye izakhiwo esweni. Bonke zibangelwa izici ezithile yokwakheka oyiyo.

Ngaphambili ungqimba has radiarnoy iris striation, onikeza ke uhlobo impumuzo lace. Kujulisa umqhewu-hlobo, etholakala izicubu zawo zezinzwa, ngokuthi lacunae. Izingqimba one-half milimitha pupillary parallel emaphethelweni, bryzhzhi elise (pinion). Kuhlukanisa iris ibe izingxenye ezimbili: elingaphandle (ciliary) kanye yangaphakathi - pupillary. anemifantu eyindilinga kuchazwa ezonini kuqala. Ziyakwazi umphumela oqondile zokunciphisa eqondisa iris ngesikhathi ukuhamba kwayo.

Engemuva phambi choroid ahlukaniswe dilator emelelwa sombala yayo futhi izingqimba umngcele. Okokuqala emaphethelweni pupillary yakha usebe noma umphetho. Front Front iris luyinto stroma iris futhi yangaphandle umngcele ungqimba.