Gashi yana da wuya fiye da yadda ya bayyana. Yana taimakawa wajen aikawa da bayanan sanarwa. Yana aiki a matsayin abin ƙyama ga ƙananan barbashi. Yana da muhimmin ɓangare na bayyanar da kuma haifar da jinsi ainihin. Har ila yau shine kawai tsarin jiki wanda zai iya sake sabunta kansa ba tare da yaduwa ba. Akwai gashi a kusan dukkanin jikin mutum. Ga cikakken bayani game da ilmin halitta, tsari, da aiki.
Yaya Gashi Raya
Tayin tayi yana tasowa ne a cikin mako daya. A wannan lokaci, akwai nau'i-nau'i 5 a jiki. Ɗaya daga cikin wadanda suke kan kai kuma 100,000 suna kan fatar jiki. Wannan shi ne mafi yawan adadin gashin tsuntsaye wanda mutum zai taba yi domin ba'a ci gaba da girma a yayin rayuwa ba. Yayin da muke girma, yawancin gashin gashi na ragewa.
Anatomy
Wani sashi na jikin mutum yana iya zama mai sauƙi, amma a hakika daya daga cikin tsarin da yafi rikitarwa cikin jiki. Gashi yana kunshe da sassa biyu masu rarrabe: gashin gashi, wanda yake ƙarƙashin fata, da gashin gashi, wanda shine gashin da muke gani.
Hair Follicle
Shine gashin gashi shine ɓangare na gashi. Tsarin tsari ne wanda yake dauke da kwayoyin halitta da kayan haɗi. Tilas yana da tushe a gindin gashin gashi. Ya ƙunshi ƙananan jini (capillaries) wanda ke ciyar da kwayoyin.
Har ila yau, nau'in ya ƙunshi matrix germinal, wanda shine inda kwayoyin ke samar da sabon gashi.
Gilashin kwanon rufi ne kamar tsarin da ke kewaye da papilla da matasan germinal. Ana ciyar da su. Gwanin yana cikin gida zuwa nau'o'in nau'in kwayar halitta wanda ke rarraba kowace rana zuwa 23 zuwa 72, da sauri fiye da sauran kwayoyin jikinsu.
Har ila yau yana dauke da hormones da ke shafi tasirin gashi da kuma tsarin a lokacin matakai daban-daban na rayuwa, kamar balaga.
Kullun yana kewaye da ƙuƙwalwa mai ciki da ƙananan da ke karewa kuma yana gyaran gashin gashi. Wurin cikin ciki yana biye da gashin gashi kuma ya ƙare kafin buɗewar glandon . Harshen ƙananan ƙananan yana ci gaba har zuwa hawan gwaninta. Ƙwararren mai ɗaukar nauyin mahaifa, ƙananan ƙwayar ƙwayar ƙwayar tsoka, an haɗa shi zuwa ƙananan murfin. Lokacin da ƙwayoyin tsohuwar ƙwayoyi, zai sa gashi ya tashi, wanda ba a san shi kamar goosebumps ba. Kwayar sakon kwaikwayo na samar da sebum, ko man fetur, wanda shine yanayin yanayin jiki. Ana samun karin sebum a lokacin balaga, wanda shine dalilin da ya sa maciji ya saba a lokacin shekarun yaro. Sebum samar da ragewa tare da shekaru, haifar da fata ya zama bushe.
Hair Shaft
Gashin gashi-gashi da muke gani-hakika matattu ne. An yi nau'i na uku na keratin , mai gina jiki mai gina jiki. A nan akwai ƙarin cikakkun bayanai game da waɗannan layuka guda uku.
- Rubutun ciki mai ciki: Ana kiran wannan ƙulla. Dangane da irin gashin gashi, ƙwarƙwarar ba a koyaushe ba.
- Layer tsakiyar: Wannan ake kira cortex, wanda shine mafi yawan gashin gashi. Dukkan nauyin da kwaya da kwayar cutar suna dauke da kwayoyin halitta wanda ke da alhakin bada launin launi.
- Layer mafi matsayi: Wannan ake kira cuticle, wadda aka kafa ta hanyar ma'auni a ma'auni wanda yake kama da shingles. Yawancin kayayyaki masu laushi gashi an tsara su har ma da cuticle ta hanyar smoothing fitar da tsarin.
Tsarin Juyin Halitta
Gashin gashin kan kankara yana tsiro kusan rabin miliyon a rana-kimanin 6 inci a kowace shekara. Ba kamar sauran dabbobi masu shayarwa ba, haɓaka gashi da hasara sune bazuwar kuma ba lokaci ba ko cyclical. Hairs suna ko da yaushe a wasu matakai daban-daban na girma da kuma zubar a kowace lokaci. Akwai matakai uku na gashin gashi: anagen, catagen, da telogen.
- Sashe na 1: Yanayin anagen shine aiki ko girma lokaci na gashi. Yawancin gashi yana ci gaba da girma kuma yana ciyarwa zuwa shekaru uku zuwa hudu a wannan mataki. Kyakkyawan siffar gashi kuma yana motsa gashin kulob din da kuma daga cikin jakar. A wannan lokaci, gashi yana kusa da 1 centimeter kowane kwana 28. Wasu mutane suna fama da wahalar girma gashin su fiye da wani lokaci saboda suna da ɗan gajeren lokaci. A wasu lokuta, mutanen da suke da dogon gashi kuma basu da matsala masu girma suna da tsawon lokaci. Lokaci na anaguwa don gashin idanu, girare, da kuma kafa hannu da kuma gashi yana da gajeren lokaci - kimanin kwanaki 30 zuwa 45 - wanda ya bayyana dalilin da ya sa gashin gashi sun fi guntu fiye da gashin gashi.
- Sashe na 2: Tsarin catagen lokaci ne na mataki na wucin gadi, kuma kashi 3% na duk gashin suna cikin wannan lokaci a kowane lokaci. Ya na tsawon makonni biyu zuwa uku. A wannan lokacin, cikewa yana raguwa kuma ƙananan ɗumbun baya yana ɗorawa kuma yana kai ga tushen gashin gashi, yana maida abin da ake sani da gashi.
- Sashe na 3: Tsarin binciken tauhidin shine lokaci na hutu, wanda yana kimanin watanni uku kuma yana da asusun 10% zuwa 15% na dukkan gashi. A lokacin wannan lokaci, gashin gashi yana cikin hutawa kuma gashin kulob din ya kafa. Kashe fitar da gashi a cikin wannan lokaci zai bayyana wani abu mai karfi, bushe, kayan fari a tushen. Jiki yana nuna kimanin 50 zuwa 100 gashin gashi a rana.
Ta yaya Yayi Shafinta
Wasu mutane sunyi kullun gashi, yayin da wasu suna da farin ciki, madaidaici, gashi mai haske. Halin yanayin gashin gashi yana dangana da siffar gashi. Yawan adadin yanayin da gashi yake da shi ta hanyar siffar giciye. Tsawon gashi yana da nau'i mai yawa. Hannun launi ko kinky gashi sune ɗakin kwana. Ƙarin madauwari da gashin gashi, da tsage gashi. Ƙarƙashin shinge, madaurar gashi.
Tsarin giciye idan gashi yana ƙayyade adadin haske wanda gashi yake. Rashin gashi mai haske yana da haske saboda sutura daga glanden gwaninta zai iya tafiya cikin gashi sau da yawa. Kinkier da gashi, da wuya wahalar sebum ya tafiya zuwa gashi, kuma mafi bushe kuma dull gashin ido.
Kuma gashinku zai iya canja launi, rubutu, da kuma kauri (kuma wurinsa zai iya canza-yawa a wasu yankuna kuma kadan a wasu) a tsawon lokacin da kake tsufa .