Mace nono ko mammary gland shine ƙwayar da ke samar da madara, wanda ya zama dole don ciyar da jariri. An sa shi ta mutum wanda ya riga ya wuce a cikin mako goma na ci gaba da intrauterine .
Kafin balagar, ƙwayoyin madara suna karuwa sosai, kuma a lokacin da balagar, glandan mammary ya fara girma, rassan madara girma da reshe, lactocytes ci gaba, kayan glandular da haɗin gland girma, siffar lobules da yawan ƙaruwa, da kuma isola da lacing pigmentation na faruwa. Cikakken nono ya kai a lokacin yada yaro.
Ta yaya ƙirjin matar take?
Gland gland yana rufe fata fata. A tsakiyar mamar gwaiwar mammary ita ce kan nono tare da isola, wanda ke da lahani da kuma gland.
Tsarin ƙirjin mace yana wakiltar wani nau'i mai glandular tare da gwangwani na daban-daban na diameters, mai laushi da haɗuwa, haɓaka lobes.
Babban tsarin tsarin ƙirjin shine alveolus, wanda shine nau'in nau'in kayan aiki. An sanya shi cikin ciki tare da sel, wanda aikinsa shine samar da madara (lactocytes). Alveoli ya haɗa da jijiyoyi da jini. A lokacin haihuwa, haɓaka alveoli, don fara samar da madara bayan haihuwar yaro. Ƙungiyar 150-200 alveoli wani lobule, tafkin 30 -80 lobules wani ɓangare ne. A cikin na'ura na mace nono rarraba 15-20 hannun jari wanda ke da deducing ducts, hadu da juna da kuma kawo karshen a kan nono. Kwayoyin muscle a cikin isola sunyi amsa tsararren kan nono.
Tsakanin lobes da lobules nama ne mai haɗuwa wanda yake haifar da kwarangwal na nono.
Sakamakon aikin nono
Nauyin da girman ƙirjin suna ƙaddara ta hanyar haɗin kai, glandular da adipose nama.
Hormones da na gina jiki a cikin gland glanding suna fitowa ta hanyar arteries. Jigon ruwa yana faruwa ne ta hanyar jiragen ruwa mai kyan gani. Yarda da jini ga nono yana ƙaruwa yayin haifa, haila, halayen jima'i.
Tsarin ƙirjin mace ya bambanta dangane da shekarun mace, lokaci na sake zagayowar, yanayin yanayi na hormonal , matakin ci gaban tsarin haihuwa, tsawon lokaci na ciki da, ba shakka, lactation. Kafin farkon kowane nau'in gland na jiki, ƙwaƙwalwar ta zama alamu kuma kumbura.
A shekaru 20-25, nono da tsari mai kama da nisa na sararin samaniya ba shi da kasa da 5 mm. Shekaru 25-40 - lokacin aikin aiki na nono. Milky ducts rufe epithelium, a kan ganuwar mammary gland shine bayyana twigs tare da secretory vesicles. A cikin rigakafi, an rarraba nama mai glandular. Tare da shekaru, adadin glandular parenchyma ragewa, atrophy na nama fibrous faruwa. A cikin kwanakin baya bayan manopausal, nauyin glandular yana maye gurbin nama mai laushi.