Kukura kwepascenta

Sezvaunoziva, iyo placenta panguva yekuzvitakura inoshandurwa kakawanda. Chokutanga pane zvose, pane kuchinja kwehupamhi hwayo, pamwe nehuwandu hwekufambira mberi: nhamba yemidziyo yeropa inofanirwa kuve nekuvandudzwa kwema fetus inowedzera. Muchirapa, sarudzo yepakati yemiganhu inotsanangurwa neshoko rokuti "kukura".

Chii chinonzi chiyero chekukura kwepentecenta chinorevei?

Inowanzogamuchirwa kugovera zviyero zvina zvekukura kwebasa remuwana, imwe neimwe inofananidzwa neimwe nguva yepamuviri. Panguva imwecheteyo, nhamba yakakura yenhamba inoratidza kusakwana kwekuwanika kwekuchengetedzwa kwemvura. 3 chiyero chekukura chinowanikwa, sekutonga, pamagumo echinguva chekubata.

Ndezvipi zviyero zvekukura kwepentecenta?

Sezvatotaurwa pamusoro apa, kune zvidhi 4 chete. Muchiitiko ichi, kukura kwelacenta kunowanzotarirwa nemavhiki ekudzivirira.

1. 0 chiyero chekutsvaga kwepascenta chinoonekwa panguva inenge kusvika masvondo makumi matatu. Dzimwe nguva, vanachiremba vakagadzira dhigirii 0-1, iyo inoratidza kuti nguva isati yasvika muparcenta. Kazhinji zvakadaro zvinowanikwa nekuda kwezvirwere zvinotapurirwa.
2. Chiyero chekukura kwepascenta chinoonekwa panguva apo nzvimbo yemwana yakanyima zvachose kukura kwayo uye kungoita kuoma kwemashuga. Iyi nguva inofanana nevhiki 30-34 yekuzvitakura.
3. 2 chiyero chekutsvaga kwepascenta chinoonekwa mumasvondo 35-39 ekudzivirira. Panguva ino apo placenta zvachose "inobereka", i.e. mabasa ayo zvishoma nezvishoma anotanga kupera. Kugadziriswa kwemuviri wenyama kunowanikwa mune dzimwe nzvimbo dzenzvimbo yemwana, mavhareti emabhakari anotanga kuonekwa pamusoro.
4. 3 chiyero chekukura kwepascenta chinoonekwa pamasvondo makumi matatu nemakumi matatu nemakumi mana ekuberekwa. Munguva iyi, vanachiremba vanonyatsocherechedza nzvimbo yenzvimbo yemwana, nokuti rimwe boka rakasarudzwa relacenta rinogona kuitika, apo rinofanira kusimudzira kuberekwa.