Abun ciki da kuma Ayyukan Fata na Ƙashin Skin
Abubuwan da aka rubuta su ne matsakaicin matsakaicin fata. Girmancin epidermis ya bambanta dangane da inda yake a jiki. Yana da ƙananan ƙananan ido a kan fatar ido, auna kimanin rabin millimita, kuma a lokacin da yake da tsalle a kan dabino da ɗakuna a 1.5 millimeters.
Jiki na Skin
Kwayar fata ta kunshi nau'i uku: kwantadar fata, da dermos, da kuma kayan ciki.
Wadannan layuka suna cikin gida don gland, gland mai, gashin gashi , da jini, da kuma wasu mahimman kwayoyin halitta.
Ayyuka na Epidermis
Ayyukan epidermis suna kasancewa mai kariya wanda ke kare jikin daga rayayyun ultraviolet (UV), sunadaran cutarwa, da kuma pathogens irin su kwayoyin cuta, ƙwayoyin cuta, da fungi.
A tarihi, an yi zaton cewa aikin epidermis shine ya tsara ruwa kuma ya kare jiki daga rauni na injiniya. A cikin 'yan shekarun nan, mun fahimci cewa wannan tsari ne mai rikitarwa wanda ke taka muhimmiyar rawa a yadda tsarin tsarin yaduwar yake magana da kuma kare tsaro.
A cikin epidermis suna da nau'i daban-daban, kunshi (daga ƙasa zuwa saman):
- Basirar Stratum, wanda aka fi sani da suna basal cell Layer, shine Layer Layer na epidermis. Wannan Layer yana ƙunshe da ƙwayoyin halitta wadanda ke da alamar shafi wanda ke rarrabawa kuma ana tura su zuwa farfajiyar. Halin da aka gina shi ma gida ne ga melanocytes wanda ke samar da melanin (alamar da ke da alhakin fata). Lokacin da aka fallasa zuwa hasken rana, melanocytes na samar da ƙarin melanin don kare kariya daga kamfanonin UV. Abubuwa masu haɗari a cikin ci gaban wadannan kwayoyin halitta zasu haifar da melanoma , mafi yawan cututtukan fata na ciwon fata.
- Stratum spinosum kuma ana kiransa "Layer Layer Layer," shine Layer Layer na epidermis wanda yake sama da basal Layer. Wadannan sun hada da kwayoyin basal da suka tsufa cikin sel, wanda ake kira da keratinocytes. Keratinocytes suna da alhakin samar da keratin, furotin dake karewa, wanda yake sa fata, kusoshi, da gashi. Sakamakon kwakwalwa kuma yana cikin gidaje na Langerhans wanda ke haɗuwa da abubuwan da ke waje yayin da suka shiga fata. Har ila yau, yana da alhakin haɗuwa da cytokines , irin nau'in gina jiki wanda ke taimakawa wajen daidaita matsalar amsawa.
- Stratum granulosum ya ƙunshi keratinocytes wanda suka tashi daga Layer. Yayin da waɗannan kwayoyin ke motsawa kusa da fatar jiki, sai su fara tadawa kuma su hada baki, a karshe suna bushewa da mutuwa.
- Stratum corneum shine matsakaicin matsayi na epidermis. Ya ƙunshi kashi 10 zuwa 30 daga cikin keratinocytes masu mutuwa waɗanda aka zubar. Shedding of these cells jinkirin muhimmanci tare da shekaru. Cikakken salula, daga basal cell to stratum corneum, yana ɗaukar kimanin hudu zuwa shida makonni ga matasa da kimanin wata daya da rabi ga tsofaffi.
- Stratum lucidum kawai yana wanzuwa a kan hannayen hannu da ƙafafun ƙafa. Ya ƙunshi nau'i hudu maimakon nau'i hudu.
Yanayi da ke tattare da jariri
Ba za a iya shawo kan epidermis ba fiye da kawai rauni. Wannan matsakaicin matsakaici shine batun dukkanin kwayoyin halitta da kuma ƙarfin waje wanda ke taimakawa wajen tsufa wannan fata. Wadannan dalilai sun hada da shan taba, barasa, da tsinkayen fukalar UV, duk abin da ke taimakawa ga ci gaban wrinkles, sunspots, da kuma ƙananan launin fata.
Har ila yau epidermis kuma inda rashes da blisters suka bayyana, sun haifar da komai daga cututtuka da kuma allergies zuwa cututtuka da toxins.
Har ila yau asalin asalin wadanda ba wadanda suke ba tare da melanoma da melanoma ba, kuma inda wasu cututtuka irin su ciwon sukari da lupus zasu iya nunawa tare da bayyanar cututtuka na dermatological.
Tsuntsarwa na epidermis zai iya haifar da cututtuka da jikinsu zasu iya karewa. Wadannan sun hada da cututtuka da cututtuka da dabbobi ke haifarwa, da wadanda suke da kwayar halitta wadanda suka shiga cikin jiki ta hanyar budewa, cuts, abrasions, ko kuma rauni.
> Source
- > Tan, S .; Roediger, B; da kuma Weninger, W. "Matsayin Kwayoyin Kwayoyi a Cikin Gidawar Cututtuka." Immunology da Cell Biology . 2015; 93 (4): 337-46.