Uphuhliso lwebele lwe-Embryonic - I-Conception ukuya kwiiveki ezili-12
Uphuhliso lwesifuba luqala ngeveki yesine yokuxhatshazwa kunye nokukhula kobisi obusisiseko. Imizila yobisi, okanye "iinqanaba ze-epidermal", ibonakala ngeveki yesithandathu "yobomi" bombungu. Baqhekeza phantsi kwi-armpit ukuya kwi-groin kumacala omabini. Isifuba sikhula ngaphaya kwesigxina phezu kwesifuba, kwaye intsalela yesigxina, ngokuyinxalenye, iyahlukana.
Uphuhliso lweBritonic Breast - 12 ukuya kwiiveki ezingama-40
Phakathi kweeveki ezili-12 ukuya kwezi-16, iseli ezikhethekileyo zitshintsha ngakumbi kwi-muscle ehamba phambili ye-nipple kunye ne-areola. Kule ngongoma, ifomathi yefomathi ifom kwaye yenza ama-milk ducts ukusuka kwiiseli ezisondelelene kunye. Ama-hormone e-sex kwi-placenta angena ekutshatsheni kwe-fetal kwaye alawule ukuphuhliswa kwebele; oku kuhleli kude kube ngamaviki angama-32. Emva koko, ukususela kwiiveki ezingama-32 ukuya kuma-40, iibisi ezinobisi, eziqulethe i- colostrum , ifom ngaphakathi kwenzalo.
Uphuhliso lwebele lwe-embyronic - iiveki ezingama-40 ukuya kuzalwa
Kwiiveki zokugqibela zokukhulelwa, ubukhulu bomzimba obumama obushushu bukhula ngokuphindwe kane ngaphezu kobukhulu bayo bokuqala, kwaye ingono kunye ne-asola zikhula ngakumbi kwaye zibe mnyama. Ekuzalweni, iindawo ezikhoyo kuphela ze-anatomy zebele zi-milk ducts ngaphakathi kwe-ingono - i-alveoli, okanye iiseli ezivelisa ubisi-azange zenziwe kwaye akukho zinguqu ezininzi ezenzekayo ngoku kuya kuqaliswa kokutshatyalaliswa.
Emva kokuzalwa, isisu somntwana osandul 'ukuzalwa singasindisa i-colostrum.
Utshintsho lwesisu ngexesha loPhulo
I-Estrogen, i-hormone eqala ukukhulelwa emantombazaneni, ibangela ukutshintsha kwebele. Ukukhula kobeleko kwenzeka ngokuqhelekileyo ngenxa yokuqokelela kwamafutha amaninzi. Inkqubo yokuziphatha iqhubeka kwaye isasazeka, kunye namaqela amancinci amancinci, ayenamafensi afomathiweyo ekupheleni kweeduct.
Ezi zizayo i-alveoli. Uphuhliso oluqhelekileyo lwamabele lubonakala phakathi kweminyaka eyi-10 ukuya kwe-11, nangona uluhlu oluqhelekileyo luphakathi kweminyaka eyi-8 ukuya kwe-13 ubudala.
Utshintsho lwebele lwesantya Ngethuba lokuya esikhathini
Ngethuba lokujikeleza kwimizuzu nganye, ukukhula komzimba kunye nokukhula okunamandla kwezicubu zengxube kwenzeka ngexesha lezinto ezilandelanayo kunye nezobuqhophololo, eziye ziqhutywe kwisigaba sokugqibela se-luteal size sihambe. Ngethuba lemijikelezo nganye ye-ovulatory, amanqanaba aphezulu e-ovarian steroids, ngokuyininzi i-progesterone, akhuthaza ukukhula okubambileyo okungapheliyo kwinto ebeyenye kumjikelezo wangaphambili. Uphuhliso olupheleleyo lomsebenzi we-mammary lukhona kuphela xa ukhulelwa.
Isisu seTisual Composition
Isifuba senziwe ngeentlobo ezintathu zezicubu: i-glandular, i-fibrous (kubandakanywa iigamente ezinqamlekileyo ) kunye ne-adipose (okanye i-fatty) tissue. Isilinganiselo esinxulumene nesigxina, i-fibrous, ne-adipose tissue sitshintsha ngeminyaka, umjikelezo wesini, ukukhulelwa, kunye nesimo sondlo.
I-Anatomy yeBast Adult
Kwimizimba yesisu evuthiweyo, izakhiwo ezibalulekileyo zikhoyo. Ezi ziquka:
- i-alveoli , okanye iibhonki ezincinci apho ubisi bugcinwa kwaye bufihliwe
- iiseli ze-myoepithelial , ezijikeleza i-alveoli kunye nekhontrakthi ukwenzela ukuba ubisi uphoqelelwe ngaphandle kwiibisi
- amathanga kunye neepayipi , ezicoca ubisi kwi-alveoli
- zesono , okanye izandiso zamadaka phantsi kwe-orola egcina ubisi
- i-lobes , okanye umnxibelelwano wokuhlanganiswa kwazo zonke izakhiwo ezikhankanywe ngasentla; ngasinye isifuba sinama-20, siphela kwi-ingono.
Ezinye iindawo ezibalulekileyo zebele
- Iintsebenziswano ze Cooper
- Umsila we-axillary , okanye inxalenye yesikhumba se-mammary eseza kwi-armpit
- Ukunikezelwa ngegazi , okuvela kwimithambo yamathambo
- Iimpawu
- Ukungabikho , okanye ukunikezelwa kwamagulane
- Ukunikezwa kwe-lymph kunye nomlambo : Iinqanawa zeLymphatic zithutha oku kuhamba kwamanzi aphuma egazini nasemzimbeni. I-lymph isuswe kwi-mammary gland kunye nezicubu ezikujikelezayo ngamacandelo amabini ezitya ze-lymphatic - enye yesikhumba; enye ingezantsi ibhokhwe, ingono kunye ne-areola.
Kubonakala kwebele
Amabele ayahluka kumfazi ukuya kumfazi. Iingxenye zesifuba ezibonwayo ngeziliso ze-iso zilingana; ubungakanani beembumba kunye nesimo; Umbala wombala, ubukhulu kunye nomlo, kunye ne-Montgomery Glands (amancinci amancinci kwi-areola edibanisa ii-oyile zendalo ukuze ahlambele indawo kwaye ancede ukukhusela ibhaktheriya ekuzaleni.)