Kimiyyar likitanci Tsarin halittar ciki na tayi Tsarin ci gaba na mahaifa saitin asibiti na dakin gwaje-gwaje na mahaifa mai sassa 10

An saita samfuran guda 10 don nuna alaƙar da ke tsakanin tsarin ci gaban tayin da mahaifa a cikin watan Oktoba. Ana kiran ƙwai mai ciki ko kuma a haɗa shi cikin makonni 2 bayan hadi; Makonni 3-8 bayan hadi ana kiransa embryos; Daga ƙarshen mako na 8, ana kiransa fetal; makonni 8; Embryos ɗin yana da tsawon kusan 3cm kuma ya fara ɗaukar siffar ɗan adam, tare da babban kai, idanu masu ganewa, kunnuwa, hanci da baki. Ana iya gano farkon samuwar zuciya da bugun zuciya ta hanyar gwajin duban dan tayi. A makonni 12, tayin yana da tsawon 7 ~ 9cm kuma yana da nauyin kusan 20g. An sami orthogonia na waje, akwai rauni a cikin gaɓoɓi, kuma cibiyoyin ossification sun bayyana a yawancin ƙasusuwa. A makonni 16, tayin yana da tsawon kusan 10 zuwa 17cm kuma yana da nauyin 100 zuwa 120g. Yana da fata ja, santsi da haske tare da ƙaramin adadin gashin vellus. Ƙarin ci gaban ƙashi, gwajin X-ray na iya ganin inuwar ƙashi, na'urar daidaita kai ta waje na iya bambanta namiji da mace. Binciken ciki na iya jin sautin zuciyar tayi, mata masu juna biyu kuma suna iya jin motsin tayi. A makonni 20, tayin yana da tsayin 18 ~ 27cm, yana da nauyin 280 ~ 300g, fatarsa ​​ja ce mai duhu, haske ya ragu, jiki yana da kitsen tayi, kan tayi yana da kashi 1/3 na jiki, akwai girman gashi, kuma aikin hadiyewa ya fara. Makonni 24 tsawon jikin tayi 28 ~ 34cm, nauyi 600 ~ 700g, kitsen subcutaneous ya fara taruwa, wrinkles na fata. A makonni 28, tayin yana da tsawon 35 ~ 38cm kuma yana da nauyin 100 ~ 1200g. Duk jiki siriri ne, fatar tana da ja, akwai kitsen tayi a kan yatsan (yatsun) farce ba ya isa ƙarshen yatsan (yatsun). A cikin mata, labia majora yana ɗauke da labia minora da clitoris, kuma a cikin maza, ƙwayayen sun sauko zuwa ƙwanƙwasa. Saboda ƙarancin kitsen subcutaneous, wrinkles na fuska, kamar dattijo. Idan aka haife su, suna iya kuka, haɗiye, da kuma motsa gaɓoɓinsu, amma suna da rauni kuma suna buƙatar kulawa ta musamman don tsira. Tsohuwar mai makonni 32 tana da tsayin santimita 40, tana da nauyin 1500 ~ 1700g, fatarta jajaye ne, gashin fuska ya faɗi, kuma tana iya rayuwa bayan kulawa mai kyau. A makonni 36, tayin yana da tsayin santimita 45 ~ 46 kuma yana da nauyin kimanin 2500g. Kitsen da ke ƙarƙashin fata, wrinkles na fuska sun ɓace, ƙusa (yatsun hannu) ya kai yatsa (ƙafar ƙafa). Bayan haihuwa, ƙwanƙwasa da tsotsa suna da kyakkyawar damar rayuwa. Tsohuwar tana girma a makonni 40, tana da tsawon kusan santimita 50 kuma tana da nauyin kimanin 3000 ~ 3300g. Fatar tana da ruwan hoda, kitsen da ke ƙarƙashin fata yana da kyau, yawancin tayin ya ragu, kuma gashin yana da tsawon santimita 2 ~ 3. Kusar yatsan ta wuce kan yatsan. Motsin gaɓoɓi masu aiki, ƙara mai ƙarfi, ƙarfin tsotsa. Tsawon jikin tayi da nauyinta suna ƙaruwa a hankali tare da watan da take ciki, domin sauƙaƙe ƙwaƙwalwa, ana amfani da dabarar da ke ƙasa don ƙididdigewa: kafin makonni 20 na tsawon ciki = murabba'in adadin watannin ciki (cm), bayan makonni 20 na tsawon ciki = adadin watannin ciki × 5 (cm).