Mondo-zai

First zvokudya muchero muviri - riye. Norm, kana pane chete yakanakisisa nguva chiitiko - 15-16 zuva racho ovum. Zviri fuma aumba kubva endoblasticheskogo sefuro, kunobva embryoblast. Izvi dzidzo shoma, riri zvakananga nevanhu zai rakasiyana nemamwe wayo sezvamunoita uye mabasa yavanobata.

Interesting ndechokuti ndiro riye tibvunze kuti paumbwe masero eropa uye diki rirambe richibvira Network. Nechekare nemazuva 18-20 mazai fetus mairi anogona kuziva diki ropa pajira riya.

Saka, muviri mumwe anokosha mune ramangwana kwemwana. Kutaura zvazviri, kusvikira nguva kana placenta hauna kuumbwa ane gobvu richikurukura ropa, zvose zviri zvokudya embryo achapiwa rakabva mondo inotungamirwa.

Nechekare nokuda yechi30 zuva riye transports chikuru utachiona masero kuti mudumbu - anotanga kuumba dzokubereka nadzo mwana. Vanhu vakawanda vanofunga kuti panguva ino kugadzirisa, uyo akaberekwa ari mukomana kana musikana. Zvisinei, vechiduku vabereki vanofanira kuziva kuti zvepabonde wemwana asi yakasarudza panguva fertilization, uye zvimwe zvose zvorwendo kukura chete vakaumba miviri, maererano majini mashoko.

Pane zvakawanda zviri zvikuru dzichifura nhengo hazvirevi kuguma ikoko. Pakati pezvimwe zvinhu, kusvikira 6 vhiki fetus riye uye chiropa anoita basa, asi synthesizes mapuroteni: Arifa-fetoprotein, transferrin, Alpha 2-microglobulin.

Zvinofanira kurangarirwa kuti mutumbi achiri rudzi goko uye muchero, kusvikira ake rokuzvidzivirira asingakwanisi pachayo kukurira zvinogona utachiona. Chokwadi chokuti chikuru zvomukati ari mudumbu anogona vakazvimiririra kubereka macrophages kurwisa chirwere. Saka Inochengetedza nembeu zai kubva inokanganisa kubva kunze.

gadziriro yakadaro ine patronage uye muchero wedzerai nguva refu, pakuguma trimester pakati riye inoderedza vokutanga uye anochinja kuva achiine rukuvhute dzidzo diki. Panguva ino, mabasa ayo ose ineshongedzo ne placenta achiumbwa uye dzimwe nhengo yacho mudumbu.

Zvinofanira akati kuti kana, nokuti chero chikonzero, paumbwe mondo anotanga kubva atanga kusvika, ko ndinoumba placenta nemamwe dzidzo inokosha, zvinogoneka kupfupfudzika kana fetus rufu. Ndokusaka pane dzimwe nguva pazvinenge zvakakodzera kuti zvakaitika Ultrasound.

Ndingaita sei kuwana riye uye ona functionality yaro?

Vakadzi vari kugadzirira kuzvarwa kwemwana, zvichida atoita kuverenga mabhuku kuti Ultrasound riye kunogona kuonekwa chete 6 kwemavhiki fetus kukura, uye mune zvimwe zviitiko gare gare. Izvi zvingava zvakafanira kuti chiri nokurongwa ovum kana aikanganiswa yacho midziyo.

Kana Ultrasound ndinokuudzai kuti riye hauna rakashandurwa pakarepo hedu musavhunduka. Teerera chiremba kusvikira pakuguma. Zvirokwazvo acharondedzera zvinhu zvose.

Kune dzakasiyana dzakawanda zvokurwara pamuviri, umo bhegi ipfupi zvakare mangwanani, kana iri kwete zvakakwana yakatanga. Mukadzi anofanira kunzwisisa kuti kunyange kana iwe vanokwanisa kuchengeta pamuviri, kuti ndingangokuvara malformations akadaro mwana kaviri.

Zvinofanira akati kuti richiona nezvezvabuda kukura mondo dzidzo kusvikira vhiki 12 pamuviri anogona kutaura sei mberi mberi pamwe kukura mudumbu, uye chii yematambudziko ukasangana vanachiremba uye vabereki.

Pane kudaro chinhu se "kushayikwa kubvisa pamuviri" - iri zvokurwara pakati riye, apo ine diki uye asiri dzichipfekeka. Fetus inosvika mumwe padanho kukura, uye hakuna kukwana vachiwedzera muviri. Mumamiriro ezvinhu akadaro zvakafanira kuchenesa uterine mhango pachiimbwa hormone kurapa.