Zamkatimu
Pa nthawi yonse ya mimba, placenta imakhala ngati airlock. Ndi mtundu wa nsanja yosinthira pakati pa mayi ndi mwana. Apa ndi pamene, chifukwa cha chingwe chake, mwana wosabadwayo amakoka zakudya ndi mpweya wotengedwa ndi magazi a amayi.
The placenta imadyetsa mwana wosabadwayo
Ntchito yaikulu ya chiberekero, chiwalo cha ephemeral chokhala ndi mphamvu zodabwitsa, ndi chakudya. Zokokedwa ndi chiberekero ndi kulumikizidwa kwa mwana ndi chingwe kudzera mumtsempha ndi mitsempha iwiri, mtundu uwu wa siponji waukulu wodzaza ndi magazi ndi villi (maukonde a mitsempha ndi mitsempha) ndi malo akusinthana konse. Kuyambira sabata ya 8, imapereka madzi, shuga, amino acid, peptides, mchere, mavitamini, triglycerides, cholesterol. Wokonda ungwiro, imasonkhanitsa zinyalala kuchokera m'mimba (urea, uric acid, creatinine) ndi kuwatulutsa m'mwazi wa amayi. Iye ndiye impso ndi mapapo ake, kupereka mpweya ndi kuchotsa mpweya woipa.
Kodi placenta imawoneka bwanji?
Kwathunthu anapanga mu 5 mwezi wa mimba, latuluka ndi wandiweyani chimbale 15-20 masentimita awiri kuti adzakula pa miyezi kufika nthawi pa kulemera kwa 500-600 g.
Phula: Chiwalo chosakanizidwa chotengedwa ndi mayi
Kholo limanyamula ma DNA awiri, amayi ndi abambo. Chitetezo cha mthupi cha mayi, chomwe nthawi zambiri chimakana zomwe si zachilendo kwa iye, chimalekerera chiwalo chosakanizidwa ichi ... chomwe chimamufuna kuti akhale bwino. Chifukwa latuluka nawo kulolerana kwa kumuika amene kwenikweni mimba, kuyambira theka la ma antigen omwe ali m'mimba mwa mwana wosabadwayo ndi abambo. Kulekerera uku kukufotokozedwa ndi zochita za mahomoni a mayi, omwe amasaka maselo oyera a magazi omwe amatha kuyambitsa chitetezo cha mthupi. Kazembe wabwino kwambiri, nkhokwe imakhala ngati chotchingira pakati pa chitetezo cha mayi ndi cha mwana. Ndipo imagwira ntchito: asakanize magazi awo awiri. Kusinthana kumachitika kudzera m'makoma a zombo ndi villi.
The placenta imatulutsa mahomoni
The placenta amatulutsa mahomoni. Kuyambira pachiyambi, kudzera mu trophoblast, ndondomeko ya placenta, imapanga wotchuka beta-hCG : Izi zimagwiritsidwa ntchito kusintha thupi la amayi ndikuthandizira kusintha kwabwino kwa mimba. Komanso progesterone zomwe zimapangitsa kuti m'mimba mukhale ndi mphamvu, estrogens omwe amatenga nawo gawo pakukula koyenera kwa fetal-placental, placenta GH (mahomoni akukula), placental lactogenic hormone (HPL) ...
Mankhwala omwe amadutsa kapena osadutsa chotchinga cha placenta ...
Mamolekyu aakulu ngati mankhwala osadutsa placenta. Choncho, mayi wapakati akhoza kuikidwa pa heparin kwa phlebitis. Ibuprofen mitanda ndi kupewedwa: anatengedwa pa 1 trimester, zingakhale zovulaza kwa tsogolo mapangidwe ubereki wa mwana wosabadwayo mnyamata, ndipo anatengedwa pambuyo 6 mwezi, zingaphatikizepo chiopsezo cha mtima kapena aimpso kulephera. Paracetamol zimaloledwa, koma ndi bwino kuchepetsa kudya kwake kwakanthawi kochepa.
Phula limateteza matenda ena
Phula limasewera ntchito yotchinga kuletsa ndimeyi wa mavairasi ndi opatsirana wothandizila mayi kwa mwana wosabadwayo, koma si zosatheka. Rubella, nkhuku, cytomegalovirus, nsungu amatha kuzembera. Chimfine nawonso, koma popanda zotsatira zambiri. Pamene matenda ena monga chifuwa chachikulu nkomwe nkomwe. Ndipo ena amawoloka mosavuta kumapeto kwa mimba kusiyana ndi pachiyambi. Chonde dziwani kuti placenta amalola mowa ndi zigawo za ndudu kudutsa !
Pa D-Day, placenta imamveka tcheru kuti iyambitse kubala
Pambuyo pa miyezi 9, yakhala ndi tsiku lake, ndipo sikuthanso kupereka mphamvu zambiri zofunika. Yakwana nthawi yoti mwanayo apume ndi kudyetsa kuchokera m'mimba mwa amayi ake; ndipo popanda thandizo la placenta yake yosalekanitsidwa. Izi ndiye zimasewera gawo lake lomaliza, kutumiza machenjezo omwe amatenga nawo gawo pakuyambika kwa kubadwa. Wokhulupirika ku positi, mpaka kumapeto.
The placenta pamtima pa miyambo yambiri
Pafupifupi mphindi 30 pambuyo pa kubadwa, thumba latuluka limatuluka. Ku France, amawotchedwa ngati "zinyalala zogwirira ntchito". Kwina konse, zimasangalatsa. Chifukwa amatengedwa ngati mapasa a mwana wosabadwayo. Kuti ali ndi mphamvu zopatsa moyo (podyetsa) kapena imfa (potulutsa magazi).
Kum'mwera kwa Italy, amaonedwa kuti ndi malo a moyo. Ku Mali, Nigeria, Ghana, ana oŵirikizaŵiri. Maori a ku New Zealand anamuika m’mbiya kuti amangirire mzimu wa mwanayo kwa makolo. A Obando a ku Philippines anamuika m’manda ndi zida zazing’ono kuti mwanayo akhale wantchito wabwino. Ku United States, amayi ena amafika polamula kuti mphuno yawo ikhale yopanda madzi m'thupi kuti imeze m'makapisozi, omwe amayenera kupititsa patsogolo kuyamwitsa, kulimbitsa chiberekero kapena kuchepetsa kuvutika maganizo pambuyo pobereka (mchitidwewu ulibe maziko asayansi).