Lunjani ulusu?
Ukujonga ngokusondeleyo ulwakhiwo lwesikhumba kutyhila iileya ezintathu ezahlukeneyo:
1. i-epidermis，
2. i-dermis kunye ne-
3. umaleko ongaphantsi komhlaba.
I-dermis ingaphezulu komaleko ongaphantsi komhlaba kwaye ngokuyintloko ineefayibha ezithambileyo, ezidityaniswe ngokuxwesileyo nangokuthe tye, nto leyo eyinika amandla amakhulu. Imithambo yegazi iphelela kwi-dermis, ngelixa ukubila kunye namadlala e-sebaceous kunye nee-follicles zeenwele nazo zilapho.
Umaleko weseli esisiseko ukwi-epidermis xa itshintsha phakathi kwayo ne-dermis. Lo maleko uhlala uvelisa iiseli ezintsha, ezithi emva koko ziye phezulu, zithe tyaba, zibe yi-corny kwaye ekugqibeleni zisuswe.
Yintoni iTanning?
Uninzi lwethu lubona ukuthambeka elangeni njengento emnandi kakhulu. Ukufudumala nokuphumla kusinika umvakalelo wokuphila kakuhle. Kodwa yintoni eyenzekayo eluswini?
Imitha yelanga ibetha i-melanin pigments kwi-epidermis. Ezi zimnyama ngenxa yemitha ye-UVA ekukhanyeni. I-melanin pigments yenziwe ziiseli ezikhethekileyo ezilele nzulu kwisakhiwo sesikhumba ezibizwa ngokuba yi-melanocytes kwaye emva koko zihamba kunye neeseli ezijikelezileyo ziye kumphezulu. Imibala emnyama ifunxa inxalenye yemitha yelanga kwaye ngaloo ndlela ikhusela iileya ezinzulu zesikhumba.
Uluhlu lwemitha yelanga i-UVB lungena nzulu eluswini kwaye lusebenze kwi-melano-cytes ngokwazo. Ezi emva koko ziyakhuthazwa ukuba zenze imibala engaphezulu: ngaloo ndlela zidala isiseko se-tan elungileyo. Kwangaxeshanye, imitha ye-UVB ibangela ukuba umaleko onamahlwili (i-callus) ube mkhulu. Olu maleko mkhulu lunceda ekukhuseleni ulusu.
Ziziphi ezinye iziphumo ezibangelwa lilanga ngaphandle kokutshisa ilanga?
Isiphumo esithomalalisayo sokuthanjiswa lilanga asiveli nje kuphela kubushushu nokuphumla okufumanekayo kodwa nakwisiphumo esinamandla sokukhanya okuqaqambileyo; wonke umntu uyazi imeko entle enokuziswa yimini yehlobo enelanga kuphela.
Ukongeza, iidosi ezincinci ze-UVB zikhuthaza iinkqubo ze-metabolism kwaye zikhuthaza ukwakheka kweVithamini D3.
Ngaloo ndlela ilanga livelisa imiphumo emihle emininzi:
1. ukomelela kwamandla omzimba
2. ukuqiniswa kokhuselo lomzimba
3. ukuphuculwa kweempawu zokuhamba kwegazi
4. ukuphuculwa kobonelelo lweoksijini kwizicubu zomzimba
5. i-metabolism yeminerali eluncedo ngokubonelela ngcono nge-calcium
6. ukuthintela isifo samathambo (umz. i-osteoporosis, i-osteomalacia)
Ukutshiswa lilanga luphawu oluqinisekileyo lokuba ulusu luchaneke kakhulu, ngoko ke kufuneka kuphetshwe ngandlela zonke.
Yintoni ukukhanya kwelanga?
Ukukhanya - ingakumbi ukukhanya kwelanga - ngumthombo wamandla apho ubomi bungenakucingelwa ngaphandle kwawo. Ifiziksi ichaza ukukhanya njengemitha ye-electromagnetic - njengamaza erediyo kodwa kwi-frequency eyahlukileyo. Ukukhanya kwelanga kuqulathe ii-frequency ezahlukeneyo esinokuzibona sisebenzisa i-prism, imibala yomnyama. Kodwa i-spectrum ayipheleli kubomvu naluhlaza okwesibhakabhaka. Emva kobomvu kuza i-infra-red, esiyifumana njengobushushu, emva koluhlaza okwesibhakabhaka naluhlaza okwesibhakabhaka kuza i-ultra-violet, ukukhanya kwe-UV, okubangela ukurhawuzelelwa lusu.
Ukuhlamba ilanga ngaphandle okanye kwi-solarium - ngaba kukho umahluko?
Ukukhanya kwelanga, nokuba kuvela eludongeni okanye esibhakabhakeni, ngokusisiseko kuyafana. Akukho nto ibizwa ngokuba “kukukhanya okwenziwayo” ngengqiqo yokuba kwahlukile elangeni. Enye inzuzo enkulu yee-sunbeds, nangona kunjalo, kukuba izinto ezikwi-spectrum nganye zinokulungiswa ngokuchanekileyo ngokweemfuno zomsebenzisi. Ukongeza, akukho mafu okuthintela ilanga kwi-sunbed ngoko ke idosi ye-cam isoloko imiselwa ngokuchanekileyo. Kubalulekile ukuqinisekisa ukuba ulusu aluxinene kakhulu ngaphandle nakwi-sunbed.
Ukutshiswa kwesikhumba ngaphandle kokutshiswa - kusebenza njani oko?
Ukongeza kwisiphumo esifunekayo sokuthambisa isikhumba, imisebe yelanga inokubangela ukuba ulusu lube bomvu ngokungafunekiyo, i-erythema -
Ukuba ulusu lutshiswe lilanga kube kanye, ixesha elifunekayo lokuthambisa isikhumba lide kunelo lifunekayo xa ulusu lubomvu.
Nangona kunjalo, kunokwenzeka ukuba ulusu lube bomvu ngokukhawuleza, ngaphandle kokutsha - ngokulula nje ngokuzihlamba elangeni rhoqo. Isizathu soku kukuba umzimba unciphisa amanqanaba okuqala okuba bomvu kolusu, ngelixa ulusu luhlala luzakha ngokwalo ngokuziva lubomvu rhoqo.
Kwi-sunbed ubukhali obuchanekileyo bokukhanya kwe-UV buyaziwa. Ngenxa yoko, isicwangciso sokuthambisa isikhumba singalungiswa ukuqinisekisa ukuba umntu uyayeka ngaphambi kokuba kuqale ukutsha, kwaye emva koko i-tan entle ikhiwa ngokuchatshazelwa rhoqo.