Xifuva
Mavele i swilo swimbirhi leswi vonakaka leswi kumekaka eka ndzhawini ya le henhla ya ventral ya torso exikarhi ka vanhu na ti primate tin'wana . eka rimbewura xinuna ni ra xisati ri kula mavele ku suka eka tinyama leti fanaka ta embryological . Vukulu lebyi ringanaka na ku kula ka mavele i ku hambana lokunkulu ka rimbewu ra xinuna exikarhi ka ra xisati na ra xinuna. Nakambe ku ni ku hambana lokukulu ka vukulu exikarhi ka vanhu. Ku kula ka mavele loku nga heriki hi nkarhi wa vuhlangi ku vangiwa hi ti- estrogen leti fambisanaka ni homoni leyi kulaka . Vanhu va xisati hi vona ntsena vanhu lava mamisaka lava kulaka mavele ,hi laha ku nga heriki loko vari emalembeni ya kondlo-a-ndzi-dyi; swihari swin'wana hinkwaswo leswi mamisaka swi kula tinyama ta swona ta mavele hi nkarhi wo hetelela wa ku tika .
Eka va xisati, mavele ma tirha tanihi ndzhuti wa mavele, lowu tumbuluxaka ni ku tumbeta masi leswaku ma phamela tincece . Mafurha ya le hansi ka nhlonge ya funengeta no funengeta netiweke ya ti duct leti hlanganaka eka xirho xa mavele, naswona tinyama leti ti nyika xifuva vukulu bya xona byo hlawuleka na xivumbeko xa xirhendzevutani. Emakumu ka ti- duct ku ni ti- lobule, kumbe marhambu ma[ti- alveoli,] laha masi ma endliwaka ni ku hlayisiwa kona ku hlamula swikombiso swa tihomoni . Hi nkarhi wa ku tika, mavele ma hlamula eka ku tirhisana loku hlanganeke ka tihomoni, ku katsa na [ti-estrogen], progesterone, na [prolactin,] leti hlanganisaka ku hetisisiwa ka ku kula ka rona, ku nga ku vupfa ka lobuloalveolar, eku lunghiseleleni ka ku mamisa.
Ku katsa ni ntirho wa wona lowukulu wo nyika tincece swakudya, mavele ma nga ha va ni xiave lexikulu eka ndlela leyi miri wa wansati wu vonakaka ha yona ni ku koka rinoko ka rimbewu . Mavele, ngopfu-ngopfu nhlungu , ma nga va ndhawu leyi nga ni ku naveta ka rimbewu, naswona ma nga va xiphemu xa masangu . Mindhavuko yin’wana yi vula leswaku mavele ya xisati ma va ni swihlawulekisi swa ntshamisano ni swa rimbewu, naswona yi nga ha teka mavele lama nga ambalangiki nchumu emahlweni ka vanhu tanihi lama nga xiximekiki kumbe lama nga mangati khoma ku biha . Mavele ya nga yimela ku veleka, vusati kumbe ku tala . Mavele ma kombisiwile eka swifaniso swa khale ni swa manguva lawa, vutshila ni ku teka swifaniso.
Swihlovo leswi tirhisiweke
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