Vhiki yechitanhatu yekukura kwe fetal inofanana nevhiki 8 yekukurumidza kwekuita pamuviri. Icho fetus inogona kukwanisa kubvongodza zvigunwe, zvigadzike mubatanidzwa wehokwe. Ndicho chikonzero pamusana wechitanhatu chekudzivirira kwekuita pamuviri mukadzi anonzwa zvakakodzera, ndiko kuti, anofunga kuti fetus inofamba. Ne-ultrasound, kutama uku kwakafanana nekudengenyeka, sezvo misimba yemwana ichiri isina simba uye kukura kwemafambiro iduku.
Kuonekwa kwemucheche
Pamusoro pemagumo emavhiki masere ekuberekwa, fetus iri muchitarisiko chakafanana nemunhu anooneka. Zvigunwe pazvibatanidza ndezvakare, asi isubs pakati pavo zvichiri kuchengetedzwa. Meso acho ari pamativi emusoro, ane maitiro emasikati, asi akafukidzwa nemafuta emawere.
Pavhiki 8-9 yekupedza, midzi yemapapu emangwana inokura. Iro bran bran bronchi, muchimiro chakafanana nekorona yemuti. Panguva ino, kuumbwa kwepfungwa chaiyo kunoitika, iyo inotsiva yekutanga, iyo yakambovapo kare. Kubudirira kwaro kunowanikwa munguva yose yehutumbi, uye kugadzirisa kwekupedzisira kunoitika mushure mokuberekwa.
Icho chiri pavhiki 7-8 yekuvhara kwemavhiki yekudzivirira kuti kune kuwedzerwa kwehukuru uye kuparara kwemuswe we embryo. Panguva imwecheteyo, mutumbi wacho wakatambanudzwa, asi huwandu hwacho huri kure nemafambiro anowanzoitwa.
Panguva ye 8 masvondo anokonzerwa nemavhesi embryo yakashamisika uye inoshambira mumamniotic fluid, kutendeuka kumativi aro nekumbo dzayo kumusoro uye kumashure. Paavhareji, ukuru hwemuviri wake panguva ino 1.5 cm.
Zviratidzo zvemamiriro emukadzi
Panguva yevhiki dzisere dzakasununguka mukadzi anosangana nenguva dzisina kunaka dzekudzivirira. Nokudaro, iri panguva ino iyo inowanzosvibisa zvinodhaka, inosvika pakukwirira kwayo. Somuenzaniso, kana mukadzi, achingosimuka, pakarepo anotora kudya kwemanheru, zvino kuvepo kwekutsvayamisa mambakwedza munyaya iyi kwakanyanya kwazvo. Chimwe chinhu chinonyanya kukosha ndechekuti maitiro anobatsira nguva pfupi mushure mekurutsa kunovandudza zvinoshamisa, uye mukadzi anogona kupedza zuva rese asina zvirwere. Chinhu chinonakidza ndechokuti kutsvakurudza kwevanachiremba veCanada kwakaita kuti zvive nyore kugadzirisa kuti mumadzimai avo vakatambura ne toxicosis mukati mese pamuviri wose, vana vakaberekwa vaiva nehutano hwakanaka.
Hormonal changes
Kana tichitaura nezvemadziro evanhukadzi, vhiki yechisere yevabereki vane hutachiwana hwepamuviri huri pasi pesimba reprogesterone uye estrogen hormone.
Mafungiro emahomoni aya anowedzera pane dzimwe nguva, sezvo chiito chavo chinonyanya chinangwa chekuchengetedza pamuviri. Ndiyo mahomoni anozorodza uterine musculature, iyo inowedzera muhukuru sezvo fetus inowedzera.
Panguva imwecheteyo, iyo yemaviri muviri inotanga kubudisa humoni inoputika, iyo inotaurira zvakananga midziyo yeigamentous yechipfuva uye mutsindo wemutsipa uterine. Sezvo nguva yekuita pamuviri inowedzera, kukohwa kwayo muropa kunoramba kuchiwedzera uye kunosvika pakukwirira panguva yekuzvarwa,
Nhamba ye hCG pa8 masvondo yevhiki inenge isina zvidzidzo. Ndicho chikonzero mamiriro ehu fetus anotsanangurwa nekubatsira kwe ultrasound.
Uyezve, makumi manomwe kubva muzana yevakadzi vane pamuviri panguva ino kune kuwedzera kwemazamu, kureva kuti, inokurira zvishomanana. Izvo zvose zvinobatana nemasoroni imwechete ayo anogadzirwa muhutano hwepamusoro.