A tsarin da gashi

Idan akai la'akari da irin sifar dan Adam gashi, akwai uku iri gashi :

- tãyuna (prenatal).

- vellus.

- intermedia (tsaka).

- bristly da dogon (m).

Vellus da kuma kumshe da babu pigment. Suna kafa a cikin mahaifa. Kafin haihuwar miƙa mulki bayyana pigmented gashi. A lokacin farko da shekaru uku da yaro ta jiki rufe da haske, laushi vellus dankon. By da miƙa mulki ga ƙarfinsa , su zama stiffer, fara girma a cikin makwancin gwaiwa, armpits, maza - jiki da kuma fuska. Bristly hairs ci gaba a kan eyelids, girare, kafafen hancinsa. Fatar kan mutum wakilci iri daban-daban.

A tsarin da gashi follicle hada da sanda. Tushen mika daga adipose subcutaneous nama ta hanyar da dermis ga epidermis. A can farko na gashi girma shi ne dake a cikin dermis. A tushen dauke da thickened kwan fitila, located a cikin follicle.

A tsarin damar da shi zuwa ga girma gashi ci gaba ana canza kama zuwa keratin da hankali motsi m, a filament form. The girma kudi da rana ne kamar daga 0.2 zuwa 0.4 mm per day.

A tsarin hada da gashi dermal papilla ta hanyar abin da iko daga cikin jijiyoyi.

Follicle da kwan fitila za a iya rasa saboda jiki tasiri, kuma tasirin da mai guba aka gyara, wanda samun da tushen na waje tare da wani asiri, samar da sebaceous gland.

Yana lẽƙãwa a kan fata core. A tsarin da gashi a cikin part wakilta uku yadudduka.

A waje (cuticle) na samar da kariya da ayyuka. A tsarin da gashi a cikin wannan bakin ciki Layer na sel da aka gabatar a cikin nau'i na flakes, overlapping juna. Lokacin da Sikeli ne m da kuma kusa da cancantar, taushi da gashi, silky. Idan akwai lalacewar da cuticle (sinadaran ko ta jiki), sun (gashin) an fara da za a rikita, zama gaggautsa, rasa su luster.

A tsakiyar Layer kira fibrous. Ya kunshi keratin zaruruwa. Wannan Layer aka dauke su da tsarin da gashi na asali, tun da shi ne a can sanya sunadarai matakai (ga waving, rini).

The uku Layer ne m tube. Ba exerting wani daga cikin matakai da wani sakamako, shi ne ba ya nan a mutane da yawa.

A cikakken sake zagayowar na kafa cikakken gashi ya shafi uku bulan: anagen, telogen, catagen.

A mataki na farko, da aiki cell division - wani tsari na mitosis. Saboda haka, sabon Kwayoyin kafa ta gashi shaft da aka kafa melanin (pigment). Last aka gyara, ciki har da kai tsaye a cikin tsarin, samar da launi. Active girma mataki yana daga biyu zuwa shekaru bakwai.

A na gaba lokaci (catagen mataki) ceases rabo a cikin sel kuma gashi girma. A pigment haka ne ma ya kammala da samuwar. A wannan mataki da follicle fara rage, albasa - don matsar da epidermis. Wannan lokaci yana for makonni da dama.

A karshe mataki na samuwar yana for game da watanni uku. A telogen lokaci na gashi girma tsaya a nan ba gaba daya, da follicle da ke shiga a jihar da hutawa. A wannan lokaci, da gashi na iya zama sauƙi cire ko kawai tsefe fall. By hazo iya tura da kuma samuwar wani sabon thread. A farkon aiki girma faruwa a wannan follicle. Daga shi zai iya girma game da ashirin zuwa talatin sabon gashi.

Duk da kasoshin lokatan aka bayyana a sama faruwa kullum. A wasu mutane ta gashi an haife, girma, fada fita da sauri fiye da wasu. A talakawan yawan follicles a kan wani mutum ta kai shi ne game da dubu 100. A lokaci guda game da 10% na su ne a cikin wani jihar da hutawa.

The gashi ya ƙunshi mafi yawa keratin. Sun kuma ba da wasu adadin ruwa, ma'adinai da aka gyara, ba a cikin jiki.

Don adana gashi kawai musamman shampoos isa ya yi amfani da wani m yanayin, masks ko balms. Domin su samuwar ake bukata da kuma arziki a cikin furotin, bitamin, aidin, da baƙin ƙarfe, da kuma sauran gyara na abinci.