Iko kukura kweiyi pfungwa yekunzwa mu "fetus" yave iri nyaya yekudzidza uye gakava kwemakore mazhinji.
Parizvino, humbowo hwakaratidza kuti mwana ari mudumbu anokwanisa kunzwa manzwi muquestter yekupedzisira yenhumbu.
Zvisinei, zvinozivikanwa kuti fetus inopindura kurira kubva pavhiki 16 kunyangwe zvimiro zve nzeve zvisina kunyatso kukura. Vanoongorora vanoti mwana anozoona manzwi acho kuburikidza neimwe nzira. Iyi imwe nzira yekuisa munzeve yaizove ganda. Izvi zvaizoita senhengo huru yekugamuchira ruzivo rwekugwinha, kuritumira kuburikidza neamniotic fluid iyo fetus yakanyudzwa.
Izvo zvikamu zve nzeve yekunze uye nzeve yepakati inokura pamusoro pemavhiki makumi maviri ekutanga.
Ehe kubva pavhiki re25 rekubata kana nhengo yekunzwa yatove kushanda. Sekureva kweAmerican Academy yePediatrics, kubva panguva ino zvichienda mberi, fetus inokwanisa kuona, kuburikidza neamniotic fluid inoikomberedza, kurira mukati memuviri waamai: kurova kwemwoyo, kutenderera kweropa, kufema, chiitiko chegadziriro yekugaya. .. Chibereko zvakare inonzwisisa izwi ramai Inopfuudzwa kuburikidza neyepamuviri mbiru uye inosvika kune iyo sacrum.
Izvo zvakave zvichiratidzwa kuti izwi raamai rine simba rinonyaradza pa "fetus", asi kwete nekuda kwezvinoreva mazwi, nekuti "fetus" haigone kunzwisisa zvinoreva kutaura kwekutaura, asi asi nekuda kwenzwi rinobata mazwi.
Iyo inozivikanwa zvakare kuti inogona kuona manzwi ekunze kunyangwe yakaomeswa neamniotic fluid. Sezvo nhengo yekunzwa iri nyore, inokurudzirwa kuti vakadzi vane nhumbu havazviratidzi ivo pachavo kurira kukuru sekuchema kukuru, kurova, mimhanzi ine ruzha ... kudzivirira kukuvara.
Mushure mekuzvarwa, mwana anoenda kubva mukuteerera kwemvura kunoteerera kumatenga. Nzeve yenzeve inodzivirirwa nemasara eamniotic fluid uye neiyo gelatinous tishu inozodzoswazve nekufamba kwenguva.