Izinwele zinzima kakhulu kunokuba zibonakala. Inceda ukuhambisa ulwazi lweengqondo. Isebenza njengomqobo kumanqwenyana angaphandle. Ingxenye ebalulekileyo yobukeka kwaye idala ubume bobulili. Kwakhona isakhiwo esisodwa somzimba esinokuzihlaziya ngokuzenzekelayo ngaphandle kokusilela. Kukhona iinwele malunga phantse yonke indawo yomzimba womntu. Nantsi ingqwalaselo epheleleyo ye-biology, isakhiwo kunye nomsebenzi.
Iifom zeNwele
Umntwana okhulayo unayo yonke i-follic hair yayo eyenziwe ngeveki 22. Ngeli xesha, kukho iifolli eziyizigidi ezi-5 emzimbeni. Esinye sezigidi sezo zisekhanda kwaye i-100,000 zisekhanda. Le yunani elikhulu leenwele zentlungu umntu oza kuba nazo kuba iifolli ziqhubeka zikhula ngexesha lobomi. Njengoko sikhula, ubuninzi beentlobo zeenwele ziyancipha.
Anatomy
Umzobo wezinwele zeenwele ungakhangela ngokuthe ngqo, kodwa ngokwenene ungomnye wezakhiwo ezinzima kakhulu emzimbeni. Izinwele zenziwe ngamacandelo amabini ahlukeneyo: i-follic folding, ekhoyo ngaphantsi kwesikhumba, kunye neentloko zeenwele, eziyizinwele esizibonayo.
Ifolda yeenwele
Inwele yentloko yindawo ephilileyo yeenwele. Isakhiwo esifana nesitokisi esinezixhobo kunye nezicubu ezinxibelelwano. I-papilla ikhona kwisiseko senwele yentloko. Iqulethe imithana encinci yegazi (i-capillaries) ezondla iiseli.
I-follicle iqulethe i-matrix yesisu, apho iiseli zivelisa iinwele ezintsha.
I-bulb isakhiwo esifana nesitokisi esijikeleza i-papilla kunye nesisu somzimba. Yondliwa ngama- capillaries . I-bulb iyikhaya leentlobo ezininzi zeeseli ezinamaqabunga ezahlula zonke iiyure ezingama-23 ukuya kuma-72, ngokukhawuleza kunamanye amangqele omzimba.
Iqulethe i-hormone echaphazela ukukhula kweenwele kunye nesakhiwo ngexesha leendlela ezahlukeneyo zobomi, njengobuntshontsho.
I-follicle ijikelezwe ngophezulu lwangaphakathi nolwangaphandle olukhusela kwaye lubumba i-hair shaft ekhulayo. Ingxangxasi yangaphakathi ilandela i-hair shaft kwaye igqiba ngaphambi kokuba kuvulwe ingqungquthela . Ingxowa yangaphandle iyaqhubeka yonke indlela eya kwi-gland. I-arrector second muscle, i-bundle encinci yefiber muscle, ifakelwe kwisangqa sangaphandle. Xa izivumelwano zesikhumba, kubangela ukuba izinwele zime, ngokunye kuthiwa yi-goosebumps. Ingqungquthela ekhulayo ivelisa i-sebum, okanye i-oyile, eyimeko yendalo yomzimba. I-sebum eninzi iveliswa ngethuba lokukhulelwa, yintoni eyenza i-acne ixhaphake ngexesha leminyaka eliselula. Ukuveliswa kwe- Sebum kunciphisa ngobudala, obangela ukuba ulusu lube lumile.
I-Hair Shaft
Izinwele zeenwele-iinwele esizibonayo-zife. Yenziwe ngamacandelo amathathu e- keratin , iproteinyini enzima. Nazi ezinye iinkcukacha malunga nalawo mathathu.
- Umda ongaphakathi: Oku kuthiwa yi-medulla. Ngokuxhomekeka kohlobo lweenwele, i-medulla ayisoloko ikhoyo.
- Uluhlu oluphakathi: Oku kubizwa ngokuba yi-cortex, eyenza ininzi yeenwele zeenwele. Bobabini i-medulla kunye ne-cortex ziqulethe iiseli ezinokuthi zinike umbala wezinwele.
- Ingqongqelo engaphezulu: Oku kubizwa ngokuba yi-cuticle, eyenziwa ngamanqanaba aphethwe ngokugqithisileyo kwisakhiwo esiqhekezayo esifana neengqungquthela zokuphahla. Uninzi lweemveliso zentlungu zenziwe ngeenjongo zokukhangela i-cuticle ngokurhoxisa isakhiwo sayo.
IsiCwangciso soPhuhliso
Izinwele ezisekhanda zikhula malunga nesiqingatha semilimitha ngosuku-malunga nee-intshi ezingama-6 ngonyaka. Ngokungafani kwezinye izilwanyana, ukukhula kweenwele kunye nokulahleka kungabonakaliyo kwaye kungabikho ixesha okanye ixesha. Iinwele zihlala zihlala kumanqanaba ahlukeneyo okukhula kwaye zichithe ixesha. Kukho izigaba ezintathu zokukhula kweenwele: i-anagen, i-catagen kunye ne-telogen.
- Isigaba 1: Isigaba se- anagen sisigaba sokusebenza okanye sokwanda kweenwele. Inwele ezininzi zikhula rhoqo kwaye zichitha iminyaka emithathu ukuya emine kule nqanaba. Iifom ezitsha zeenwele kwaye zinyusa iinwele zebhola kunye nokuphuma kwintolthi. Ngethuba lesigaba, iinwele zikhula malunga ne-1 cm nganye kwiintsuku ezingama-28. Abanye abantu banzima ukukhula iinwele zabo ngaphaya kobude obude kuba banesigaba esifutshane se-anagen. Ngokuchaseneyo, abantu abaneenwele ezide kakhulu kwaye abanenkathazo yokukhula iinwele banesigaba eside se- anagen. Isigaba se-anagen se-eyelashes, iinki, kunye neenwele zentloko kunye neengalo nazo zifutshane-malunga neentsuku ezingama-30 ukuya kwi-45-ezichaza ukuba zeziphi iinwele zifutshane kakhulu kuneenwele ze-scalp.
- Isigaba sesi-2: Isigaba sentshukumo sigaba sentshintsho, kwaye i-3% yazo zonke iinwele zile nqanaba nganoma nayiphi na ixesha. Kuphela ezimbini ukuya kwiiveki ezintathu. Ngeli xesha, ukukhula kuyancipha kwaye ingcambu yangaphandle iyancipha kwaye idibanisa kwingcambu yeenwele, yenza into eyaziwayo njengeenwele zebhola.
- Isigaba sesi-3: Isigaba se telogen yisigaba sokuphumla, esihlala malunga neenyanga ezintathu kunye ne-akhawunti ye-10% ukuya kwi-15% yazo zonke iinwele. Ngethuba lesi sigaba, ubugqwetha beenwele buphumle kwaye izinwele zebhola zenziwe ngokupheleleyo. Ukukhupha iinwele kweli nqanaba kuya kubonisa izinto eziqinileyo, ezomileyo, ezimhlophe kwiingcambu. Umzimba ujikeleza ubuncinane bezinwele ze-scalp eziphakathi kwe-50 ukuya kwi-100 ngosuku.
Indlela Ezuza Ngayo Ifomu
Abanye abantu baye bagxotha iinwele ezibukiweyo, kanti ezinye zizinwele ezinqamlekileyo, ezichanekileyo, ezikhanyayo. Ukubonakala kweenwele kubonakala kwimilo yeenwele. Ubungakanani bendalo engokwemvelo enyunwele enqunywe yimilo yayo. Izinwele ezichanekileyo zinemijikelezo yesetyhula. Iimpawu ezinqambileyo kunye neenkinky zizintlu. Isetyhula ethe xaxa iinwele zeenwele, umkhonto unwele. I-flatter i-shaft, u-curter unwele.
Ubume obunqamlezileyo xa iinwele zibala inani lokukhanya kweenwele. Izinwele ezigqithisileyo zihamba ngokuba i-sebum ephuma kwi-gland egciniweyo ingakwazi ukuhamba phantsi kweenwele ngokulula. I-kinkier iinwele, ubunzima obuninzi be-sebum buhamba ngaphantsi kweenwele, kwaye ngakumbi ukomile kwaye kuthoba iinwele zibukeka.
Yaye iinwele zakho zinokutshintsha umbala, ukubunjwa kunye nobukhulu (kwaye indawo yayo ingatshintsha-kakhulu kwiindawo ezithile kwaye uncinci kwabanye) ngokuhamba kwesikhathi njengoko ukhula .