Ubusobanuro busanzwe bwibintu biranga tissue yuruhu nuburyo busanzwe bwuruhu. Iherekejwe n'abantu bakivuka. Igizwe nuduce twuruhu rwuruhu hamwe nuruhu rwuruhu, usanga ahanini ari polygon nyinshi kandi hafi idahindutse. Urebye neza uruhu rwambaye ubusa, urashobora kubona imiterere itoroshye, akajagari, kimwe numusatsi mwiza wamabara aremereye cyangwa yoroheje. Ariko, uko ibihe bigenda bisimburana, abantu bakomeza gusaza, kandi uruhu narwo rusaza buhoro buhoro. Muri icyo gihe, uruhu rukunze kugaragara nabwo ruzahura n’ibituruka hanze nko guhumanya ibidukikije, kandi bikomeze gukomeretsa, kandi igipimo cy’ibyangiritse ku ngirabuzimafatizo za corneum kizahinduka. Umubare wibiti byuruhu hamwe nuruhu rwuruhu birahinduka, kandi imiterere ihagaze neza nayo igaragara nkaho ihujwe, umubare uragabanuka, kandi ubuso bukomeza kwaguka, bityo uruhu rugahinduka inkeke kandi rukabije.
Mubisanzwe, mbere yimyaka 25, hejuru yuruhu rworoshye, urumuri, kandi rworoshye. Nyuma yibyo ariko, uruhu rutangira gusaza buhoro buhoro kandi ibimenyetso bya physiologique mubisanzwe birahinduka.
1. Ubushuhe bwuruhu ninzitizi yuruhu
Ubushakashatsi bwinshi ku ruhu rukabije rwibanda ku mikorere ya stratum corneum, nk'imikorere y'ubushobozi bwo gufata amazi n'imikorere ya barrière y'uruhu. Nkubushakashatsi bwubushuhe, ibintu bisanzwe bitanga amazi, hamwe nimpinduka za lipide hagati ya selile corneum selile. Gutakaza ubushuhe birakabije, bigatuma uruhu ruhinduka kandi rukamera. Isuka ry'uturemangingo twa epidermal rirahungabanye, bigatuma habaho umusaruro wa dandruff n'umunzani. Ubushuhe bwuruhu bifitanye isano rya bugufi nubushuhe, ubwiza nubwiza bwuruhu. Corneum yoroshye, yamazi menshi yerekana buri gihe kugirango habeho urumuri rwinshi, mugihe corneum yumye, yumye, igaragarira muburyo budasanzwe butuma uruhu rusa nkimvi. Hamwe nubushyuhe buke mu ruhu, uruhu ruba rwumye kandi rukomeye, kandi uruhu rwijimye.
Uruhu rugabanije imikorere ya barrière ni nkumutaka wacitse. Ntabwo gusa amazi ya endogenous azimuka byoroshye, ariko ibitera hanze biroroshye gutera, kandi no gutwika nabyo bikunze kubaho. Nkibibazo byuruhu bijyanye no gutwika: guhinda, kurwara, gukuramo, guhinda, gutukura, nibindi.
Icyorezo cya epidermis cyerekanaga gusana umubyimba mugihe ibyangiritse byari byoroheje, na atrophy mugihe ibyangiritse byari bikomeye. Ingirabuzimafatizo zibanze zahinduwe na atypia igaragara, kandi hariho umubare munini wingirabuzimafatizo.
2. Dermis itakaza ubuhanga bwayo
Gukomera k'uruhu bifitanye isano rya bugufi na elastique y'uruhu. Uruhu rworoshye rwuruhu rugabanuka, ubunebwe bwuruhu cyangwa iminkanyari bigaragara, kandi ububobere bwuruhu bwiyongera. Fibroblast nibintu byingenzi bigize selile muri dermis yuruhu kandi bigira uruhare runini muguhuza fibre yibanga na matrix idasanzwe. Ifite uruhare runini mugusana ibikomere. Hamwe n'imyaka, umubyimba wuruhu uragabanuka uko fibre ya fibre ya elastique iri muruhu igabanuka buhoro buhoro. Gusaza k'uruhu biragaragara, bishobora kugaragara nkuruhu rwumye kandi rukomeye, kwiyongera kandi byimbitse, iminkanyari, uruhu rworoshye, no kugabanuka kwa elastique. Imyaka iherekejwe no kugabanuka kwa poroteyine kure cyane y'uruhu, kubura gukomera mu ruhu, no kwiyongera k'uburebure bw'imiterere y'uruhu biganisha ku kugaragara kw'iminkanyari.
Mbere yuko ibibazo byuruhu biboneka, turacyafite ibintu byinshi byo gukora. Kurugero ,.gusesengura uruhuirashobora kudufasha gutinda cyangwa gukemura ibibazo byuruhu kurwego runaka mbere yuko ibibazo byuruhu bigaragara neza!
Igihe cyo kohereza: Ukwakira-12-2022
