Zvakakosha kuziva kuti yepfumbamwe vhiki yekubata pamuviri ndeyechokwadi yevhiki yechinomwe kubvira panguva yekuberekwa. Vanotsanangura izvi kuburikidza nechokwadi chokuti izwi rekushushikana rekuzvitakura rinoverengwa kubva pamwedzi wekupedzisira, uye kwete kubva pazuva apo mazai ei yaiitika.
Pavhiki yepfumbamwe inotanga mwedzi wechitatu wekudzivirira. Nokudaro, chetatu yekutanga iri kusvika kumagumo. Panguva ino, mukadzi anowanzove anonzwisisa mamiriro ake ezvinhu. Vanaamai vanonyanya kutarisirwa kubhadhara pakuberekwa.
Mavhiki masere evhiki - chii chinoitika kumucheche?
Saka, pavhiki 9 mwana anonzi atova chibereko. Iyo yakareba 2-3 masentimita, uye uremu hunosiyana pakati pe5 ne15 gm. Musoro wemucheche unenge uchiri kutarisa kusingapindirani kune muviri wayo, asi unowedzera zvishoma nezvishoma. Mwana anoita mutsipa, anotonhora musana, uye iyo inonzi "muswe" inova coccyx.
Maziso e-fetus achiri kuvharwa muvhiki yepfumbamwe, nzeve dzomukati dzinooneka. Muromo wake unofanana nemiromo yake. Anobata nemakumbo echeche anova mazhinji, minwe inokura kwenguva refu, tsoka dzinowedzera. Paminwe kune marigolds akasiyana, akaumbwa kubva kune epidermis yakagadzirwa. Icho fetus inogona kutotanga kusiyanisa zvikanda.
Phiki 9, fetus inoshingaira kuumba zvikamu zvakakosha zveuropi, pamwe neyo yose yenheyo yenheyo yose. Pakati pepakati pejandi rinonzi adrenal gland rinobudisa adrenaline inoumbwa. Mwoyo, kurova pamhanya we 130-150 kurova paminiti, pasina mazuru kubva kunze kwechifuva, mapapu anoumba muti webronchial.
Mamiriro emukadzi mumavhiki masere mapfumbamwe ekudzivirira
Mune nguva ino, placenta inotanga kushanda nesimba rakazara, uye saka mushure memavhiki masere, kungozi yekumuka pamuviri kunoderera, chero bedzi iyo placenta inobata zvakakwana nebasa rayo yekutsigira pamuviri uye kupa mwana.
Yechipfumbamwe chinodzivirira vhiki inozivikanwa nechinotevera kuchinja mumuviri weamai:
- inowedzera huwandu hweHCG ( munhu chorionic gonadotropin );
- chibereko chinowedzera;
- kune manzwiro anorwadza mumakumbo emakumbo;
- Kakawanda kacho kukurudzirwa kunyorera zvishoma nezvishoma;
- chiyero chekupararira ropa chakawedzerwa ne40%, uye naizvozvo itsvo, mwoyo nemapapu zvinoshanda nenzira yakasimbiswa.
Mukuwedzera, muviri wevachauya amai unobatanidza mafuta, anemia inogona kuitika. Mukadzi anogona kuramba achiona zviratidzo zve toxicosis. Inogona kukanganiswa nekutsumwa uye kuneta.