Ukususela kumaxesha amandulo, isifuba sebhinqa sithathwa njengesimboli sokuzala kunye nokubeleka, kwaye le nto yinto ecacileyo ngokucacileyo, ngenxa yeyona njongo ebalulekileyo yomzimba - ukuvelisa ubisi kunye nokusondeza umntwana osanda kuzalwa.
Ingqwalasela ekhethekileyo ihlawulwa kwi-grey gland kwintlalo yanamhlanje, kodwa kungekhona nje kwindlela yokujonga ngayo umsebenzi wayo oyintloko, kodwa ngokunxulumene nokujonga izinto zobugcisa kunye nokuphila ngokwesondo. Inkalo yokugqibela yenzalo ebandayo kubantu besini esahlukileyo, siya kulahlwa, kwaye sithetha ngeempawu zesakhiwo sebhere kwabesetyhini nemisebenzi yayo.
Ulwakhiwo lwesifuba
I-mammary gland yenye yezona zidibeneyo zendlela yokuzala yesibini kwaye yenye yezinto zesini zesibini. Iqumrhu lisephambi kwesifuba esifundeni sesibhobho sesithathu nesesixhenxe. Ubume kunye nobungakanani bodwa bubodwa kumfazi ngamnye, nangona kunjalo, isakhiwo sangaphakathi nesakhelo sesifuba siyafana kubo bonke, kubandakanywa namadoda.
Icandelo eliphambili lomsebenzi wesisu sebhinqa ngu-alveolus, ojongene ngqo noveliso lobisi. Ngendlela ebonakala ngayo, i-alveolus ifana ne-vesicle ngaphakathi ngaphakathi eline-lactocyte-iiseli ezigubungelayo, ngaphandle zijikelezwe yimithambo yegazi kunye neentsholongwane ezinikezelayo.
Ukuqokelela i-alveoli kwisixa semali engama-30 ukuya kwe-80 yifom yee-olules, ezize zenze i-lobes. Njengomthetho, kukho iigqeba ezingama-20 kwisakhiwo sesifuba sebhinqa, esisezantsi kwenzalo. Iziqendu zakho zeetekisi ezixhunyiwe zinikezwa phakathi kwe-lobes kunye namacandelo. Isabelo ngasinye sinesidumbu saso, ezinye zazo zidibanisa enye kwaye zidibene ngqo kwi-pore yobisi elinezikhwebu.
Ingxowa yincinci encinci ye-convex, ejikelezwe yi-areola ene-diameter ibe ngamasentimitha amahlanu. Ezi nxalenye zesifuba ziye zaphucula i-pigmentation yesikhumba. Ingxube inendima ebalulekileyo kwinkqubo yokondla umntwana.
Kuba umlo kunye nobukhulu be-mammary gland isilinganiselo soxhumo kunye neestipose tissue, ekhoyo nakwimeko yayo. Ezi zilinganiso ziyahlukahluka, ngoko kuxhomekeka kwiimeko ezininzi, ukubonakala kwesifuba kuya kutshintsha. Iiparitha zixhomekeke kwiminyaka, imvelaphi ye-hormonal, umzimba, inani lokuzalwa kwangaphambili kunye nokukhulelwa, kunye nexesha lokutya.
Iimpawu zophuhliso lwebele
Ukumiselwa kwelokuba ukubekwa kwelungu kubanjelwa kwinkqubo yokuphuhlisa i-intrauterine . Ekuqaleni, uhlobo lwesakhiwo sesifuba lufana nababini nabasetyhini. Nangona kunjalo, ngokumalunga nomgaqo opheleleyo weenkqubo zonke ezenzeka kwibele kunye namahomoni, ukukhula kwawo kwisiqingatha esomeleleyo kuvinjelwe, kwaye kumantombazana, emva kokufikelela kwiminyaka ethile, ukukhula okusebenzayo kuqala. Ngokuchanekileyo, i-mammary gland kubasetyhini iqala ukuphuhlisa ngamandla ngexesha lokukhulelwa:
- kukho i-branching yamadaka ebisi;
- i-lactocytes;
- inani lama-lobules kunye ne-lobes landa;
- izicubu ezinxibelelwano kunye neoli idibanisa;
- i-pigmentation ye-nipple kunye ne-asola iya kuthiwa yenzeke.
Ekugqibeleni kweli xesha, amabele eentombazana ayakhelwe ngokupheleleyo kwaye alungele ukuzalisekisa isigqibo sabo.
Isisu xa ukhulelwa
Ngokuqhelekileyo, utshintsho olwenzeka kwisifuba, okokuqala uxelele umama ozayo malunga nesimo sakhe esithakazelisayo. Oku kubangelwa ubukhulu obuphezulu bentloko ye-mammary ukuya kutshintsho oluncinci kwimvelaphi ye-hormonal, eyona nto ibangela indlela yokulungiselela umveliso wobisi.
Ingqungquthela yamathambo yinkqubo eyinkimbinkimbi yenkqubo yokuzala isisu, inesakhiwo esinqununu, iyanceda bonke abafazi ukuba banakekele zonke iinguqu ezenzeka kuyo.