Uruhu rwubatswe rute?
Urebye neza kuri struc-ture y'uruhu igaragaza ibice bitatu bitandukanye:
1. epidermis，
Dermis na
3. urwego ruto.
Dermis iri hejuru yubutaka bwubutaka kandi byingenzi bigizwe na fibre ya elastique, ihujwe cyane kandi itambitse, itanga imbaraga zikomeye.Imiyoboro y'amaraso irangirira muri dermis, mugihe ibyuya na glande sebaceous kimwe nu musatsi nabyo birahari.
Urwego rwibanze rwibanze ruri muri epidermis mugihe cyo guhinduka hagati yacyo na dermisi.Uru rupapuro ruhora rutanga selile nshya, hanyuma ikazamuka hejuru, igororotse, igahinduka inguni hanyuma amaherezo ikazunguruka.
Tanning ni iki?
Benshi muritwe twiyuhagira izuba nkikintu gishimishije cyane.Ubushyuhe no kwidagadura biduha kumva tumerewe neza.Ariko ni iki kibera mu ruhu?
Imirasire yizuba ikubita melanin pigment muri epidermis.Ibi byijimye nimirasire ya UVA mumucyo.Melanin pigment ikorwa ningirabuzimafatizo zidasanzwe ziryamye cyane muburyo bwuruhu rwitwa melanocytes hanyuma zikagenda hamwe ningirabuzimafatizo zikikije hejuru.Ibara ryijimye ryinjiza igice cyimirasire yizuba bityo bikarinda uruhu rwimbitse.
Imirasire ya UVB ya sunJs yinjira cyane muruhu kandi ikora kuri melano-cytes ubwazo.Ibi noneho birashishikarizwa gukora pigment nyinshi: bityo bigashiraho urufatiro rwiza.Muri icyo gihe, imirasire ya UVB itera igorofa (callus) kubyimba.Iki gipimo kinini kigira uruhare mukurinda uruhu.
Ni izihe ngaruka zindi izuba rifite uretse izuba?
Ingaruka zo guhumuriza izuba ntiziva gusa ku bushyuhe no kwidagadura byabayeho ahubwo binaturuka ku mbaraga zitanga urumuri rwinshi;abantu bose bazi umwuka mwiza umunsi wizuba gusa ushobora kuzana.
Byongeye kandi, ibipimo bito bya UVB biteza imbere meta-bolic kandi bigatera gukora Vitamine D3.
Izuba rero ritera kubyara ingaruka nziza:
1. imbaraga mubuzima bwumubiri
2. gushimangira kwirwanaho kwumubiri
3. kunoza imitekerereze yamaraso
4. gutera imbere h okisijene itanga umubiri
5. amabuye y'agaciro meza binyuze muburyo bwiza bwo gutanga calcium
6. kwirinda indwara yamagufwa (urugero: osteoporose, osteomalacia)
Izuba Rirashe ni kimwe mu bimenyetso byerekana ko uruhu rwarenze urugero bityo rugomba kwirindwa uko byagenda kose.
Umucyo w'izuba ni iki?
Umucyo - na cyane cyane urumuri rw'izuba - ni isoko y'ingufu zitabayeho ubuzima budashoboka.Fizika isobanura urumuri nkimirasire ya electromagnetic - nkumurongo wa radio ariko kumurongo utandukanye.Imirasire y'izuba igizwe numurongo utandukanye dushobora kubona mubyukuri dukoresheje prism, je amabara yumukororombya.Ariko ibice bitarangirira kumutuku n'ubururu.Nyuma yumutuku uza infra-umutuku, ibyo tubona nkubushyuhe, nyuma yubururu na violet haza ultra-violet, urumuri rwa UV, rutera uruhu.
Kwiyuhagira izuba hanze cyangwa Muri solarium - hari itandukaniro?
Imirasire y'izuba, yaba iturutse kurukuta cyangwa ikirere ， ni kimwe.Ntakintu nk "urumuri rwubukorikori" muburyo butandukanye cyane nizuba.Inyungu imwe yizuba, ariko, nuko ibice bigize ibice bishobora guhinduka neza kubyo umukoresha akeneye.Byongeye kandi, nta bicu bihagarika izuba ku zuba kugirango dose kamera ihore igenwa neza.Ni ngombwa kwemeza hanze ndetse no ku zuba kugirango uruhu rutaremerewe.
Gutwika udatwitse - ibyo bikora bite?
Imirasire y'izuba irashobora, usibye ingaruka zifuzwa zo gutwika ， nayo itera umutuku utifuzwa kuruhu, erythma - muri yo
imiterere mibi, izuba.Kwiyuhagira izuba rimwe, igihe gikenewe cyo gutwika ni kirekire kuruta icyakenewe kugirango uruhu rutukura.
Nubwo bimeze gurtyo, birashoboka kandi kugera kuntebe nziza, idatwitse - muburyo bwogukoresha izuba.Impamvu yabyo nuko umubiri ugabanya ibyiciro byambere byo gutukura uruhu ugereranije vuba, mugihe igituba gihora cyiyubaka binyuze mumagambo menshi.
Ku zuba ryaka ubukana nyabwo bwurumuri rwa UV rurazwi.Kubera iyo mpamvu, gahunda yo gutwika irashobora guhindurwa kugirango umuntu ahagarare mbere yo gutwika gutangira hanyuma igitereko cyiza cyubatswe binyuze mumagambo menshi.
Igihe cyo kohereza: Apr-02-2022