Isikhumba sakhiwe kanjani?
Ukubhekisisa ukwakheka kwesikhumba kuveza izendlalelo ezintathu ezihlukene:
1. i-epidermis,
2. isikhumba kanye
3. ungqimba olungaphansi kwesikhumba.
I-dermis ingaphezu kongqimba olungaphansi kwesikhumba futhi empeleni luhlanganisa imicu enwebekayo, elukwe ngokudayagonali futhi evundlile, ikunika amandla amakhulu.Imithambo yegazi iphelela ku-dermis, kuyilapho izindlala ze-sebaceous kanye nezinwele zezinwele nazo zikhona lapho.
I-basal cell layer iku-epidermis lapho kushintshwa khona i-dermis.Lesi singqimba sihlala sikhiqiza amaseli amasha, abese eya phezulu, acaba, abe corn futhi agcine ehlehlisiwe.
Kuyini i-Tanning?
Iningi lethu lizwa ukushiswa yilanga njengento emnandi kakhulu.Ukufudumala nokuphumula kusinika umuzwa wenhlalakahle.Kodwa empeleni kwenzekani esikhumbeni?
Imisebe yelanga ishaya ama-melanin pigments ku-epidermis.Lokhu kwenziwa mnyama imisebe ye-UVA ekukhanyeni.Ama-melanin pigments akhiwa amangqamuzana akhethekile alele ekujuleni kwesakhiwo sesikhumba esibizwa ngokuthi ama-melanocyte abese ehamba namaseli azungezile aye phezulu.Imibala emnyama imunca ingxenye yemisebe yelanga futhi ngaleyo ndlela ivikele izingqimba ezijulile zesikhumba.
Ibanga le-UVB lemisebe ye-sunJs lingena lijule esikhumbeni futhi lisebenze kuma-melano-cyte ngokwawo.Lezi zibe sezigqugquzelwa ukuba zenze ezinye izibala zemibala: ngaleyo ndlela zidale isisekelo se-tan enhle.Ngesikhathi esifanayo, imisebe ye-UVB ibangela ungqimba lwezimpondo (i-callus) ukuba lujiye.Lolu ungqimba olujiyile lunomthelela ekuvikeleni isikhumba.
Yimiphi eminye imiphumela elangeni elinayo kunokushukwa?
Umthelela opholile wokushiswa yilanga awuveli nje kuphela ekufudumaleni nasekuphumuleni okutholakalayo kodwa nasemthelela onika amandla wokukhanya okukhanyayo;wonke umuntu uyawazi isimo sengqondo esihle esingalethwa usuku lwasehlobo olunelanga kuphela.
Ngaphezu kwalokho, imithamo emincane ye-UVB ikhuthaza izinqubo ze-meta-bolic futhi ikhuthaze ukwakheka kwe-Vitamin D3.
Ngakho-ke ilanga libangela ingcebo yemiphumela emihle:
1. ukuthuthukiswa kokuqina komzimba
2. ukuqiniswa kokuzivikela komzimba
3. ukuthuthukiswa kwezakhiwo zokugeleza kwegazi
4. ukwenziwa ngcono h ukutholakala komoyampilo ezicutshini zomzimba
5. inzuzo amaminerali umzimba ngokusebenzisa ngcono supply of calcium
6. ukuvimbela isifo samathambo (isb. i-osteoporosis, i-osteomalacia)
Ukushiswa yilanga kuwuphawu olulodwa oluqinisekile lokuthi isikhumba siye sachayeka ngokweqile ngakho kufanele kugwenywe ngazo zonke izindleko.
Kuyini ukukhanya kwelanga?
Ukukhanya - futhi ikakhulukazi ukukhanya kwelanga - kuwumthombo wamandla ngaphandle kwalokho ukuphila kungenakucatshangwa.I-Physics ichaza ukukhanya njengemisebe kagesi - njengamaza omsakazo kodwa kumafrikhwensi ahlukile.Ukukhanya kwelanga kuhlanganisa inqwaba yamafrikhwensi ahlukene esingawabona sisebenzisa iprism, noma imibala yothingo.Kodwa i-spectrum ayigcini ngokubomvu nokuluhlaza okwesibhakabhaka.Ngemuva kokubomvu kuvela okubomvu kwe-infra-red, esikuzwa njengokufudumala, ngemuva kokuluhlaza okwesibhakabhaka no-violet kuvela i-ultra-violet, ukukhanya kwe-UV, okubangela ukushuka kwesikhumba.
Ukugeza ilanga ngaphandle noma ku-solarium - ingabe ukhona umehluko?
Ukukhanya kwelanga, kungakhathaliseki ukuthi kuvela esisekelweni sodonga noma esibhakabhakeni, kuyafana ngokuyisisekelo.Ayikho into ebizwa ngokuthi “ukukhanya okwenziwayo” ngomqondo wokuthi ihluke ngokuphelele ekukhanyeni kwelanga.Enye inzuzo enkulu yama-sunbed, nokho, ukuthi izingxenye ngazinye ze-spectrum zingalungiswa ngokunembile ngokwezidingo zomsebenzisi.Ngaphezu kwalokho, awekho amafu okuvimba ilanga endaweni yokulala ukuze ikhamera yomthamo ihlale inqunywa ngokunembile.Kubalulekile ukuqinisekisa ukuthi ngaphandle naphezu kombhede welanga, isikhumba asilayishiwe ngokweqile.
Ukushuka ngaphandle kokushiswa - kusebenza kanjani lokho?
Imisebe yelanga, ngaphezu komphumela ofisa ukushukwa, ingabangela nokubomvu okungafuneki kwesikhumba, i-erythema - esikhumbeni sayo.
isimo esibi kakhulu, ukushiswa yilanga.Uma ushiswa ilanga kanye nje, isikhathi esidingekayo sokushukwa side kunesidingekayo ukuze isikhumba sibe bomvu.
Naphezu kwalokhu, kungenzeka futhi ukufeza i-tan enhle, ngaphandle kokuvutha - ngokumane nje ngokushisa ilanga okuvamile.Isizathu salokhu ukuthi umzimba unciphisa izigaba zokuqala zokubomvu kwesikhumba ngokushesha, kuyilapho i-tan ihlale izakhela ngokuchayeka kaningi.
Ku-sunbed amandla okukhanya kwe-UV ayaziwa.Ngakho-ke uhlelo lokushukwa lungalungiswa ukuze kuqinisekiswe ukuthi umuntu uyama ngaphambi kokuba kuqale ukushiswa bese kuba nokubanda okuhle ngenxa yokuchayeka kaningi.
Isikhathi sokuthumela: Apr-02-2022