Womuntu isikhumba umsebenzi

Imisebenzi kwesikhumba zihlukene futhi wonke ukudlala indima ebalulekile umzimba womuntu. Okokuqala, ikhava yethu yemvelo kuvikela umzimba. Isikhumba - uhlobo umgoqo phakathi izinhlelo zangaphakathi nezwe ngaphandle. Lokho kuvumela ukuvikela umzimba kusuka ukusikeka, nemivimbo ingcindezi, ie emathonyeni lokukhanda. Londoloza idatha kithi ngokwemvelo futhi ihlanganisa emiphumeleni amakhemikhali - acid kanye alkalis, ngaphandle kwalokho kakho izindleko, libe indlela yethu yokuphila. Skin uyasivikela emathonyeni enqabayo kwemvelo (ilanga, umoya, ukushisa nokubanda) kanye Ukungena emzimbeni kwamagciwane kanye nezifo ezihlukahlukene, ultraviolet infrared.

Mechanical umsebenzi ayisivikelo isikhumba abazenzi sibonga ikhono epidermis ukubuyisela, kanye ngenxa isakhiwo nokunwebeka dermis, kanye izakhiwo ezithile fibre yayo. indima enkulu ekusebenziseni isenzo engikhiphela ekuvikeleni ungqimba phezulu ikhava yethu yemvelo. Izikhwepha kuyaqina we epidermis kuqinisekiswa khona ukubunjwa yayo amaprotheni lipids. Dermis isetshenziswa ukuze zimboze ukumelana zemvelo ukuze ukudabuka ngesenzo lokukhanda.

Kuvele umsebenzi obalulekile ayisivikelo isikhumba ukuvikela umzimba kusuka ngemiphumela yokukhishwa kwemisebe. Ngaphezu kwelanga, ukuthonya komuntu kanye emisebeni yelanga. I corneum stratum kwesikhumba ukuvikela likhuphuka wokuqala kusukela imiphumela emibi evela ngaphandle. imisebe ultraviolet, basesimweni uhla ethile, kubangele basabele kahle ezingeni we epidermis. Lokhu kungadala yilanga, futhi kamuva, futhi umdlavuza. imisebe ultraviolet, okungase ukungena izingqimba ezijulile dermis, ukuthuthukisa nokuzwela ilanga futhi kuholele ukuguga ngaphambi kwesikhathi kwesembozo engokwemvelo emzimbeni. Imphendvulo kumiswa isikhumba yilanga. Ngakho semali sombala ukuthi ubamba ray in ezahlukene ezahlukene. umbala kwesikhumba ngesikhathi esifanayo kokushintsha kube mnyama. Ngakho, emangqamuzaneni omzimba bavikelekile insolation okusezingeni eliphezulu.

Umsebenzi kwesikhumba futhi engena emzimbeni iqhaza exchange igesi. Ngokusebenzisa ikhava zemvelo izingqimba akwazi ukungena umoya-mpilo, i-ammonia, isikhutha-hydrogen sulfide. Kule ndaba, umsebenzi zokuphefumula kwesikhumba is kunakwe phakathi nezinqubo yezimonyo. Kumele kukhunjulwe lapho ethatha zokugeza, bese usebenzisa for ekwelapheni udaka ekwelapheni.

Isikhumba futhi unesibopho nokugcinwa thermoregulation zomzimba. Bobabili ebusika futhi ehlobo ngenxa yezinga lakhe lokushisa asishintshi futhi ngezithuba 36,6 degrees.

Penetration ngokusebenzisa imigudu izinwele amanoni ezihlukahlukene izakhi zamakhemikhali kufakwe umsebenzi umsoco isikhumba. Lesi sici likhona ukuthuthukiswa okhilimu yezimonyo kanye nezixazululo. Zemifino amafutha kanye ezilwane, Izithako zokudla namavithamini kufakwe izidakamizwa angena epidermis futhi kuwo umphumela zayo zokwelapha.

Ngo isikhumba imisebenzi womuntu zihlanganisa ikhono ahlanze ngokwayo. Iqhaza main kule nqubo kungokwalabo umjuluko nezindlala sebaceous, lapho umzimba bukhipha kweminye imikhiqizo eyingozi umzimba (urea, i-ammonia, njll).