Pamasvondo gumi nemaviri ekuberekwa, yekutanga katatu yekuzvitora iri kusvika pakuguma. Iwe unogona kufema kugomera, nokuti panguva ino panguva iyo iyo placenta inobereka morphologically uye inoshanda, ichiita basa guru mukugadzirwa kwemakemikari emahomoni, yakaitwa musati mutezo wemiviri. Chiitiko chakadai sekutanga toxicosis chinokonzerwa nehomoni yebasa rejena muviri musati vhiki yegumi nembiri yekudzivirira. Iye zvino zviitiko izvi zvakanyanya kushayiwa simba kana kunyangarika, kunyange zvisati zviri zvose. Izvo zvaizova kuva nemimba yakawanda, kutakurwa kwakakomba uye kutanga kwepamuviri.
Chii chinonzi mazamu anotarisa semavhiki gumi nemaviri?
Pamasvondo gumi nemaviri, embryo ikozvino yakafanana nekoduku kadiki yemunhu - ine nhengo dzepamusoro uye zvirongwa - uropi nemutsipa wesipinha, mumukati mutsara, mwoyo uye nhamba shomanana yemidziyo yeropa, chiropa neitsvo zviri kushanda, kubudiswa kwebi yekutanga uye urini kunotanga. Panguva imwecheteyo, skeleton inotanga-musisipo, chirwere chekateti, chikafu chinoputika. Imbyo inotanga kuita mhando dzisingabatsiri - inomwa munwe, inofambisa musoro, inoita kufamba nekugadzirisa uye inogona kunge yakagadzikana. Nenzira yeutye yenguva yemberi mwana achiri kuenderera mberi, asi uropi hunofananidzwa nehuropi hwevanhu vakuru, chete mumutauro muduku. Fetal size pamasvondo gumi nemaviri akaenzana nehukuru hwepakati-yakakura yeii yei. Kukura kwekurera pamasvondo gumi nemaviri kunokera kubva pa6 kusvika ku 9 cm. Fetal uremu pavhiki gumi dzinogona kuva 10-15 g.
TVP kana kuwanda kwemukati fetal space pamasvondo gumi nemaviri ndiyo imwe yenzira yekuongorora chromosomal pathology. Kazhinji, TVP inofungidzirwa kuti inenge kusvika 3 mm, pamatunhu akakwirira inokurudzirwa kuita nharo yezvinyorwa zvekuziva kuti chromosomal isingaenzaniswi, kunyanya, Down's disease. Zvisinei, hazvishamisi kuvana vane vana vane utano hwakakwana kuti vazvarwe neTVP 5 mm kana kupfuura.
Fetometry ye fetus pamasvondo gumi nemaviri inofanirwa kunyatsogadziriswa kwezera remakore, kutarisa kubatsirwa kwechecheche, pamwe nekuongorora kusanzwisisika kwakajeka mukubudirira kwemukati.
BPR kana biparietal ukuru hwemusoro wekuberekwa pamasvondo gumi nemaviri inofanira kunge iri mamita 21 mm, i-LJ kana chimiro chemuviri - kwete pasi pe 26 mm, KTP kana checcygeal parietal size - kwete pasi pe 60 mm, DB kana tambo refu - kwete pasi pe 9 mm, DHA kana iyo yakareba yebhokisi - kwete pasi pemamiriyoni makumi maviri nemaviri.
Nzira yekuzvibata sei kune amai vari mberi munguva yevhiki gumi nembiri?
Iyo fetus inoshambadza zvikuru pamasvondo 12-13, inomesa amniotic fluid zvakasimba, inofambisa zvigunwe nemakumbo, zvisingaverengeki marigolds pane zvinoshandiswa, peristalsis inowanikwa mudumbu. Kana ari amai vane ramangwana, ukuru hwechibereko hunowedzera - inotanga kukwira pamusoro pebato duku, asi hapasisina chikonzero chokufuka nguo kune vakadzi vane pamuviri. Zvakakosha kuyeuka kuti mbatya dzinofanira kuva dzakasununguka uye pasina mamiriro akaoma. Sezvo kuomeswa kwemukati kunowedzera nekuwedzera kwehupamhi hwechibereko, uye kubvongodza kunogona kuonekwa panguva yekudzivirira , zvinokosha kuti uwedzere kudya kwako nezvokudya zvine fiber - marudzi ose emiti yakasvibirira, zviyo - oats, buckwheat, mapira. Zvisinei, mucheka mutsvuku unofanira kunge usina kukwana, sezvo unogadzirisa uye uri muhupamhi ane mavhitamini mashoma.
Panguva imwecheteyo, vanachiremba vanokurudzira kuderedza kudya kwezvigadzirwa zvenyama, umo mune mukana
Uyezve, amai vanguva yemberi vachave vakanyanyobatsira kuva mumhepo kakawanda, uye kuwedzera zvakanyanya, sezvo izvi zvinokonzera kukura kwemasumbu emumwana mucheche uye zvichawedzera kubuda kweokisijeni kumatumbu ake.