Kapangidwe ka tsitsi

Poganizira kapangidwe ka tsitsi la munthu pali atatu mitundu ya tsitsi :

- mazira (akalandire chithandizo);

- vellus;

- intermedia (Transitional);

- lokhala ndi ubweya ndi yaitali (osachiritsika).

Vellus ndi nyongolosi alibe pigment. Iwo anapanga m'mimba. Asanabadwe kusintha kuoneka tsitsi inki. M'zaka zitatu za thupi mwana yokutidwa ndi kuwala, zofewa tsitsi vellus. Ndi kusintha kwa akula , iwo stiffer, akuyamba kukula mu groin, m'khwapa, amuna - thupi ndi nkhope. Lokhala ndi ubweya tsitsi kukhala pa zikope za, nsidze, mphuno. Khungu ankaimira mitundu yonse.

Kapangidwe ka munthu follicle tsitsi zikuphatikizapo ndi ndodo. Mizu kuyambira adipose subcutaneous minofu mwa dermis kwa khungu. Pa siteji koyamba za kukula tsitsi izo lili dermis lapansi. Muzu uli babu unakhuthala ili mkati follicle lapansi.

Kapangidwe chololera kukula tsitsi mosalekeza kusandulika mu keratin ndi pang'onopang'ono kusuntha kunja mu mawonekedwe filament. The kukula kugunda patsiku pafupifupi kuchokera 0.2 kuti 0.4 mamilimita patsiku.

Kapangidwe zikuphatikizapo tsitsi dermal papilla kudzera zomwe mphamvu kuchokera m'thupi.

Follicle ndi babu ukhoza kusokonekera chifukwa zimakhudza thupi, ndi mmene zigawo poizoni, amene kupeza muzu wa kunja ndi chinsinsi, ndi opangidwa ndi zopangitsa za sebaceous.

Iwo limatuluka pamwamba pa khungu pachimake. Kapangidwe ka tsitsi mbali umaimiridwa ndi zigawo zitatu.

Lakunja (cuticle) imapereka ntchito chitetezo. Kapangidwe ka tsitsi wosanjikiza izi woonda maselo zikufotokozedwa mu mawonekedwe a flakes toyalana mzake. Pamene mamba ndi zolondola ndi pafupi koyenera, tsitsi zofewa, silky. Ngati pali kuwonongeka kwa cuticle ndi (mankhwala kapena thupi), iwo (tsitsi) ayamba kusokonezedwa, kukhala Chimaona, kutaya luster awo.

Wosanjikiza pakati otchedwa fibrous. Amakhala ulusi keratin. wosanjikiza Izi akuti ndi kapangidwe ka tsitsi zofunika, chifukwa pali anapanga njira mankhwala (kwa m'mwamba, ankaudaya).

Wosanjikiza chachitatu ndi chubu dzenje. Osati wakulimbira iliyonse ya njira ziribe mphamvu, ndi kwina anthu ambiri.

A mkombero wathunthu wa n'kupanga tsitsi zonse kumafuna magawo atatu: anagen, telogen, catagen.

Pa gawo loyamba, yogwira selo magawano - ndondomeko mitosis. Choncho, maselo atsopano popangidwa ndi kutsinde tsitsi aumbike melanin (pigment). zigawo Last, kuphatikizapo mwachindunji mu dongosolo amatipatsa mtundu. Yogwira kukula siteji chimakhala cha zaka ziwiri ndi aŵiri.

Mu gawo lotsatira (catagen siteji) ikutha kugawikana maselo kukula tsitsi. pigment Choncho inunso anamaliza mapangidwe ake. Pa nthawi iyi follicle umayamba kuchepa, anyezi - kusamukira khungu. gawo Izi kumatenga masabata angapo.

Gawo lotsiriza la mapangidwe kumatenga miyezi itatu. Mu telogen gawo la kukula tsitsi mabasi kwathunthu, ndi follicle amapita ku boma la mpumulo. Mu gawo ili, tsitsi mosavuta pochotsa kapena kungoti chipeso kugwa. Ndi mpweya kufika ndi mapangidwe ulusi latsopano. Chiyambi cha kukula yogwira chikuchitika mu follicle chomwecho. Pa zimene kukula za makumi awiri kuti makumi atatu tsitsi latsopano.

magawo onse tafotokozazi zimachitika tsiku. Mu tsitsi anthu ena amabadwa, kukula, dana mofulumira kuposa ena. Wapakati chiwerengero cha follicles pamutu pa munthu ndi pafupifupi 100 zikwi. Pa nthawi yomweyo pafupifupi 10% ya iwo ali mu mkhalidwe zina.

tsitsi lili makamaka keratin. Iwo pano ndi ena kuchuluka kwa madzi, zigawo mchere, pano mu thupi.

Kusunga tsitsi yekha mankhwala ochapira tsitsi wapadera zokwanira ntchito ndi moyo wabwino, masks kapena balms. Uyambike awo zofunikira ndi wolemera mu zomanga thupi, mavitamini, ayodini, chitsulo, ndi mbali zina za chakudya.