Isakhiwo webele, ukukhula kwawo

Ukuze uqonde isakhiwo kanye umsuka usizo webele anatomy. indlala mammary - a modified apocrine umjuluko nezindlala zavela yi-ectoderm. Kubantu, ukuthuthukiswa kwe-nezindlala mammary kwenzeka ngesonto kweziyisithupha zokuphila intrauterine. Esikhathini isikhumba webele mncane futhi usentekenteke, iqukethe izinwele follicle, umjuluko sebaceous nezindlala. Indlala mammary has a sebuningini yezinzwa ehlombe plexus wesibeletho nezinzwa intercostal. umzimba indlala has simise ayizindunduma discoid, umbala pink evamile okhanyayo, ukuthungwa obukhulu, ububanzi isilinganiso base kuyinto 10-13 cm wamabele amantombazane une-Isisindo esivamile 150-200 g kanye lactation -. 400-900, Y abesifazane abaningi abasebasha enempilo ibunjwa Nenkabazwe indlala futhi uprugimi.Stroenie usayizi webele, ukuma isikhundla anezici ngabanye kanye nezici.

Isakhiwo webele kanye nokwakheka kwayo

Amabele zabesifazane akhiwe amaseli amaningi ezikhiqiza ubisi, okuyinto ziqoqwa ku lobules. Kusukela ngamunye tincetu ngabanye isuka ekusakazeni Milky, futhi zonke izingxenye ehlangana zibe izingxenye kokuba uvule imbobo esibulalayo lapho ehlangana zonke Amapayipi encane esigungwini.

Ingxenye radially ahlelwe ngokuhlobene embeleni futhi sihlukile kwezinye ngalinye izicubu adipose. isabelo ngasinye indlala lesi sijame njengebhoksi Isigaxa nge sokudlondlobala ngesikhathi ingono, lapho kuvula imbobo excretory. Amapayipi kuya ingono liya likhula nakakhulu, yakha sinuses Milky. Kwakheka endaweni ezungeze ingono ubizwa ngokuthi areola, kanye egqumeni elincane kuso - kungcono umjuluko nezindlala. Isakhiwo wamabele kwabesifazane iyahluka kwenye besilisa ndlala isakhiwo.

Kukhula nezindlala mammary Kwenziwa sibonga prolactin (hormone we pituitary anterior) kanye amahomoni esibelethweni. Ngenxa lactation prolactin kwenzeka. Engxenyeni yokuqala yokukhulelwa webele inyuka ngosayizi, njengoba kwenzeka engxenyeni ukukhula EPITHELIAL secretory umsebenzi partite lamaseli aqukethe alveoli yesibili. Ekupheleni sokukhulelwa futhi izinsuku ezimbalwa emva kokuzalwa kwandisa uketshezi futhi ukhiqiza aphuzi, kube uqweqwe liquid okunomsoco ngokuthi colostrum. Khona-ke ushintsho yokwakheka uketshezi, kuba ketshezi ukungaguquguquki futhi secrete ubisi. Ekupheleni kwesikhathi yokudla, ukukhiqizwa ubisi incipha futhi eyeka kuze sokukhulelwa olandelayo.

ukuthuthukiswa wamabele ngo amantombazane kwenzeka phakathi nenkathi yokuthomba abaneminyaka ephakathi kwengu-10-15. Inqubo iqala nge ekukhuleni ingono futhi areola peripapillary ke luqala ukukhula webele bebonke. Wamabele kwabesifazane lukhula isikhathi eside futhi ekugcineni kuvikelwe usayizi webele kuphela kokusuthisa ingane. Isigaba penultimate ukukhula isifuba eba neminyaka engu-15-17.

indlala mammary - isitho labile, kanye kwesibeletho kuthintwa ukulungiswa cyclical. Ngaphambi ukuqala menses kwenzeka ekwandeni nezindlala, izicubu zigcwala, yensimbi iba edematous futhi friable. Ngemva kokuphela kokuya esikhathini, lezi zimpawu ziyanyamalala. Ngokuhambisana yobudala nezikhathi webele ihlukaniswe 4 izinhlobo.

1. Iron inkazana kumbe umuntu wesifazane iminyaka 20-25. Indlala mammary has a isakhiwo iyunifomu, imigudu yobisi imperceptible premammarnogo isikhala ububanzi 5 mm.
2. Umdlavuza abesifazane abaneminyaka ephakathi kwengu-25 no-40 kusebenzeka asebenzayo. amavesi wakhe Milky kuthiwa uphahlwe epithelium, njalo sikhule ezindongeni kukhona amagatsha nge esigungwini vesicles secretory. Isakhiwo nezindlala kuyehluka ngenxa yezinguquko cyclical.
3. Mammary ndlala nambili kuya kwabadala. Ngo premenopausal izicubu yezindlala is kwashabalala efomini leziqhingi ezincane ezingaba unxantathu yezindlala, ahlukaniswa kusukela adipose izicubu Amasimu. Njengoba bekhula, inani parenhim yezindlala incipha webele ekubambisaneni. izicubu fibrous atrophies.
4. Mammary ndlala postmenopausal abesifazane. Ngo izinguquko menopausal ebeleni iba izicubu engelapheki yezindlala ubalekela ngokuphelele, displaces okunamafutha izicubu.

Njengoba kushiwo ngenhla, isakhiwo isifuba incike yobudala, ezingeni yentuthuko izitho zobulili, kusukela esigabeni se-umjikelezo wokuya esikhathini uwubufakazi ka abesifazane, isimo hormone, ubude nokukhulelwa kanye lactation. Ubudala iyisici main ukuthi inquma isakhiwo uhlobo nezindlala. Kodwa, noma kunjalo, kukhona ukwehluka ngabanye wokwehla kanye nokuthuthukiswa izakhi yezindlala, okuyinto kunqunywa alimentary, endocrine kanye nezinye izinto.