12 mavhiki mashoma ekutora pamuviri ibasa rinokosha mukusimudzirwa kwechecheche: chetatu inotanga kupera, iyo placenta inenge yakasikwa, ingozi huru yekudzivirira chirwere chakanyanya uye kubvisa pamuviri kusati kwatova kumashure. Tinodzidza kuti chibereko ichi chinogona "kuzvirumbidza" mumavhiki gumi nemaviri uye kuti kukura kwayo kunoitwa sei musi uyu.
Anatomy ye fetus 12 masvondo
Pamasvondo gumi nemaviri, mwana wemukomana, kana kuti panzvimbo iyo fetus, akapedzisira atora maitiro uye akafanana nemurume muduku. Nhengo dzose dziri munzvimbo dzavo, asi vazhinji vavo havasati vashanda, chete ndivo vakuru uye vanokosha zvikuru vanoshanda. Nokudaro, mwoyo wemakumbo mana unorova paanowanzoita anenge 150 kurohwa paminiti, chiropa chinotanga kubudisa bile yakafanira yekudya mafuta, hutumbu hunoita hutachiona hwese, uye itsvo dzinobudisa urini.
Uropi hweku fetal hwemavhiki gumi nemaviri hwakafanana nehutano hwechidiki hwevanhu vakuru: masangano ayo ose akaumbwa, uye makuru ehemispheres akavharwa ne convolutions. Muviri wepituitary, uri pazasi pasi peuropi, unotanga kubudisa mahomoni.
Mucheche achiri kukanganisa: musoro wacho unooneka akareba kupfuura chitunha. Pamasvondo gumi nemasere kusvika 12 kusvika ku12 fetus ichiri shoma uye haina kutarisa sechechecheche. Nguva yekuchengetedza mafuta ichauya gare gare, uye ikozvino mishonga iri kuumba uye kukura, kuumbwa kwemapfupa emapfupa kunotanga, mumagumisiro anoonekwa maziso emeno echigarire, uye paminwe yemaoko nemakumbo - zviduku zviduku. Iye zvino anoda calcium uye mapuroteni kupfuura kare, saka amai vanguva inouya vanofanira kuwedzera kudya kwake nemishonga ine zvinhu izvi.
Pakupera kwevhiki yegumi nembiri kuumbwa kwehutano hwemwana huri kusvika pakuguma. Iye zvino nerubatsiro rwe ultrasound unogona kuona kana mukomana akaberekwa kana musikana. Muropa recheche, kuwedzera kune masero matsvuku eropa (masero matsvuku eropa), kune masero masero eropa (masero eropa rega), izvo zvinoreva kuti chitunha chayo chinoonekwa. Ichokwadi, asati aberekwa uye mwedzi yakaverengeka mushure maro, miviri yomuviri yemadziviriro ichadzivirira makumbo.
Kutora fetal 12 vhiki
Pakupera kwekutanga kwekutatu mwana anorema anenge 14 g, uye kukura kwaro kubva korona kusvika kune tailbone 6-7 cm.Uropi huri kukura nokukurumidza, manzwiro ehutano uye masumuttu anokura. Mwana anokwanisa kugadzirisa, kusvinura uye kuvhara muromo wake, kumira, kugunun'una zvigunwe zvake nezvigunwe, kumanikidza uye kuvhara chibhakera chake uye kuputika mumubereki. Kune amai vanguva yemberi, maitiro eprobatic anoramba achioma: kumira kwema fetus pamasvondo gumi nemaviri kuchiri kushaya simba uye kusinganzwisisiki. Iko kune zvimwe zvisinganzwisisiki: nekubata chiberekero, chibereko chinodonha kubva pairi, chinomwa munwe kana chibhakera, chinotsauka kubva pachiedza chakajeka.
Munguva iyi mwana anogona kukwanisa kusiyanisa kuravira, kumedza amniotic fluid. Kana mai vakadya chimwe chinhu chinosuruvarisa kana chakavava, muduku wacho anoratidza kuti chinonaka sei chinonaka ndechokuti: kunamata chiso chake, kubudisa rurimi, kuedza kumedza zvishoma sezvinobvira amniotic fluid.
Mukuwedzera, mwana anotanga kuita kufema kunofamba. Zvechokwadi, izvi hazvisati zvanyatsofema uye kubuda kwemuviri: inzwi rezwi ravharwa uye amniotic fluid haina kupinda mumapapu. Zvisinei, chifukidzo checheche nguva nenguva inotuka uye inowira -kudzidziswa uku kwemapfupa ekufema kuchagara kusvikira pakupedzisira kwekuita pamuviri.
Chii chaungaona pane ultrasound mumavhiki gumi nemaviri?
Sezvazvinozivikanwa, kubva vhiki yegumi neviri vakadzi vose vari mumamiriro ezvinhu vari kupiwa kutanga kuongorora ultrasound pakuberekwa . Izvi hazvisi kuitwa kuitira kuti uone hutano hwemwana (zviratidzo zvepabonde zvekunze zvisati zvaonekwa). Basa guru rekudzidza nderokudzivisa kuvepo kwekukurira kwakanyanya kwekusawirirana uye fetal pathologies.
Kunyanya kukoshesa kunopiwa ku:
- ukuru hwema fetus pamasvondo gumi nemaviri (kazhinji mwana anorema 14-19 g, kureba kwayo ndeye 7-8 cm, uwandu hwemusoro ndeyemamiriyoni 21, uye upamhi hwechifuyo ndihwo 24 mm);
- kuwanda kwekorori nzvimbo (haifaniri kudarika 3 mm, zvisinei kuti ngozi yechromosomal isingakwanisi inogoneka);
- kukurudzirwa kwepa placenta (zvakakosha kusabvisa nguva isati yasakara yepentecenta nezvimwe zvirwere);
- nzvimbo ye fetus pavhiki 12 (panogona kunge kune nzvimbo yakadzika pasi, asi, sekutonga, nekufamba kwenguva, placenta "inotama" ichienda pasi pechibereko).