Chifuva chechikadzi kana mammary gland inhengo inobereka mukaka, izvo zvinodiwa pakupa mwana. Inoratidzwa nomunhu anenge atova kwevhiki yegumi yekutambisa intrauterine .
Kusati kwava kuyaruka, mukaka unobereka kuwedzera, uye munguva yekupera, mazamu anoita mamita anotanga kukura zvakasimba, mukaka wemukaka hukura uye davi, ma-lactocytes anobudirira, zvinokonzera uye zvinogadzirisa zvinyuchi zvemajanda zvinokura, maumbirwe emagetsi uye nhamba inowedzera, uye isola uye ingwe inonzi pigmentation inowanikwa. Kukura kwakakwana kwezamu kunosvika munguva yekubereka mwana.
Ko mukaka womukadzi ndeyei?
Izvo zvipfeko zvinoputika zvinoputika ganda rinotapira. Pakati pekumusoro mamine gland ishungu ine anora, iyo inenge yakasununguka uye inosuruvara.
Chimiro chechifu chechikadzi chinomiririrwa nemucheka unokonzera nematope emadharamita akasiyana, mafuta ane mafuta uye anogadzirisa, achiumba lobes.
Icho chikuru chemuumbi wechamuti ndeye alveolus, iyo inoratidzika se vesicle. Iro mukati maro rakabatanidzwa nemasero, basa rinoitwa mukugadzirwa kwemukaka (lactocytes). Iroveve inobatanidzwa nemisungo nemidziyo yeropa. Munguva yekuzvitakura, kuwedzera kwema alveoli, kuitira kutanga kutanga mukaka mushure mokuberekwa kwomwana. Kushamwaridzana kwema 150-200 alveoli inonzi lobule, dziva remakumi matatu nemakumi matatu nemakumi matatu emakiromendi chikamu chiduku. Muchigadziro chechikadzi chechikadzi chinopa zvikamu 15-20 izvo zvakabvisa matope, kubatana pamwe chete uye kupedzisira mumukono. Tsvina yemasumbu muAraola inopindura pakugadzirwa kwekoko.
Pakati pe lobes uye makulules ibasa rinobatanidza rinoita maronda anokosha emuzamu.
Zviratidzo zvebasa rinoshanda
Chimiro uye chiyero chezamu zvinotaridzirwa nechiyero chekubatanidza, chekunyora uye chidimbu chechidimbu.
Mahomoni uye mishonga mumakumbo emakumbo anounzwa kuburikidza nemariti. Kubuda kwemvura kunowanikwa kuburikidza nemidziyo ye-lymphatic uye ye-venous. Kupindira kweropa kumabere kunowedzera panguva yekuzvitakura, kumwedzi, kuita zvepabonde.
Chimiro chemuviri wechikadzi chinosiyana zvichienderana nezera remukadzi, chikamu chekufamba-famba, nyika yehutoni , ruzivo rwekukura kwehutano hwekuberekwa, nguva yekutakura uye, zvechokwadi, lactation. Pamberi pekutanga kwezvinyorwa zvemavara zvemwedzi zvese zvinodururwa, chifuyo chinosununguka uye chinoputika.
Pakazosvika makore makumi maviri nemakumi maviri nemashanu, chifuva chine chimiro chakaenzana uye upamhi hwepakutanga nzvimbo isingapfuuri 5 mm. 25-40 kwemakore - nguva yekushanda kwebasa. Ducts emidziyo yakavhara epithelium, pamasvingo emakumbo emamota anoonekwa mashizha nevharese vesicles. Mukuperesa kwemvura, mavara ane glandular anopararira. Nezera, nhamba yekunyadziswa kweprisymma inoderera, kuputika kwezviputi zvinokonzera zvinoitika. Mumazuva ekuma-menopausal, mavara ane mavara anotsiviwa zvachose nemafuta.