Kugayiwa kwemasero eganda ndekwekuti basal keratinocytes dzinofamba zvishoma nezvishoma dzichikwira nekusiyana kwemasero, uye pakupedzisira dzinofa kuti dzigadzire stratum corneum isina nucleated, dzobva dzadonha. Kazhinji zvinotendwa kuti nekuwedzera kwezera, basal layer ne spinous layer zvinokanganiswa, kubatana kwe epidermis ne dermis kunova kwakati sandara, uye ukobvu hwe epidermis hunoderera. Sechipingamupinyi chekunze kwemuviri wemunhu, epidermis inosangana zvakananga nenzvimbo yekunze uye inonyanya kukanganiswa nezvinhu zvakasiyana-siyana zvekunze. Kukwegura kweganda kunoratidza zviri nyore pesvedzero yezera nezvinhu zvekunze pakukwegura kwevanhu.
Muganda rinokura, kusiyana kwehukuru, chimiro uye hunhu hwekutsvukisa kwemasero e basal layer kunowedzera, kubatana kwe epidermis ne dermis kunowedzera zvishoma nezvishoma, nzara ye epidermal inova isina kudzika, uye ukobvu hwe epidermal hunoderera. Ukobvu hwe epidermal hunoderera neinenge 6.4% pagumi rega rega, uye hunoderera nekukurumidza muvakadzi. Ukobvu hwe epidermal hunoderera nekukura. Kuchinja uku kunonyanya kuonekwa munzvimbo dzakaratidzwa, kusanganisira nzvimbo dzinobuda pachiso, mutsipa, maoko, uye maoko. Keratinocytes inochinja chimiro sezvo ganda richikura, richiva pfupi uye richikora, nepo keratinocytes ichikura nekuda kwekuchinja kwenguva pfupi kwe epidermal, nguva yekuvandudzwa kwe epidermal inokura inowedzera, basa rekuwedzera kwemasero e epidermal rinoderera, uye epidermal inova yakatetepa, zvichiita kuti ganda rirasikirwe nekusimba uye makwinya.
Nekuda kwekuchinja uku kwechimiro, mubatanidzwa we epidermis-dermis hausi wakasimba uye haugone kukuvara kubva kunze. Huwandu hwe melanocytes hunodzikira zvishoma nezvishoma mushure memakore makumi matatu, simba rekuwedzera rinodzikira, uye mashandiro e enzymes ema melanocytes anodzikira ne8%-20% pagumi rega rega. Kunyangwe ganda risiri nyore kutsvukisa, ma melanocytes anowanzo pararira munzvimbo dzakasiyana siyana kuti agadzire mavara e pigmentation, kunyanya munzvimbo dzine zuva. Masero eLangerhans anodzikirawo, zvichiita kuti mashandiro ekudzivirira ganda adzikire uye ave nyore kubatwa nezvirwere zvinotapukira.
Chinovhara gandaMuchina uyu unogona kushandiswa kuona makunya eganda rechiso, magadzirirwo aro, kurasikirwa necollagen, uye chimiro chechiso kuti ubatsire kuona kukwegura kweganda rechiso.
Nguva yekutumira: Chivabvu-12-2022
