Ihwo hunozivikanwa hwepentecenta ndeyekuti inowanikwa mumuviri wemukadzi chete panguva yepamuviri, inozadzisa basa rayo rinokosha, kubvumira kubereka mwana, uye zvino zvachose inopera.
Ipapi iyo inogadzirwa?
Placenta inotanga kuumbwa muvhiki yechipiri ye intrauterine kukura kwe fetus. Pakati pemavhiki matatu kusvika matanhatu kusvika 6 kusvika matanhatu kusvika matanhatu kusvika pakubatanidzwa zvakanyanyogadzirwa, zvishoma nezvishoma kuwana chimiro che disk, chinova chinonyanya kutaurwa nevhiki 12. Kana iwe uchida kunzwisisa kuti placenta inoratidzika sei, fungidzira keke. Kungoyeuchidza muviri uyu.
Nzvimbo ye placenta
Sezvo mutemo, iyo placenta iri pamusana kana kumadziro mberi kwechibereki, pedyo nepamusoro pezvikamu zvaro. Nechikamu chechitatu chetemu kubva pamucheto we-placenta kusvika mukati memukati wekamu, chidimbu chinofanira kuva chinopfuura masendimita matanhatu. Zvimwe zvisingaiti, zvinonzi kune chikwata chakasara chepentecenta. Kana iyo placenta inoputika mukati-kati chetrynx-ihwo hutano hwakasiyana -kuratidza.
Maitiro eparcenta
Chimiro che placenta chakaoma zvikuru. Muchiri, ropa midziyo midziyo yeamai nemwana inoshandura. Zvose izvi zvinoparadzaniswa nechemberi, zvichida kunzi "placental barrier". I-placenta iyo imwechete iyo nhengo yevakadzi vaviri vane pamuviri uye fetus.
Mabasa epa placenta
- Kutakura oksijeni kuburikidza neropa raamai kune fetus. Saizvozvowo, mune zvakasiyana, carbon dioxide inotakuriswa.
- Tumira ku fetus yezvibereko zvakakosha muupenyu hwaro uye kubudirira.
- Kudzivirirwa kwema fetus kubva kune hutachiona.
- Synthesis yehomoni inokonzerwa nekanguva yekudzivirira pamuviri.
Kukura kwepascenta nevhiki
Inogamuchirwa kusiyanisa dhigirii mana yekukura kwepentecenta zvichienderana nezera remukati:
- 0 - vhiki dzinopfuura makumi matatu;
- 1 - 30-34 vhiki;
- 2 - 34-39 vhiki;
- 3 - mushure memavhiki makumi matatu nemaviri.
Norm weupfumi wepentecenta
I-placenta inotsvakurudzwa nemaune nokuda kwehutema mushure mevhiki ye20 yekudzivirira ne ultrasound. Pane humwe hutsika hunoti placenta inofanira kuenzaniswa pakuberekwa nekukura. Zvinotendwa kuti kuwanda kwepentecenta kunofanira kuenzana nekureba kwehupombwe, pamwe kana kudarika 2 millimita. Semuenzaniso, kana nguva yako iri masvondo makumi maviri, kubwinya kwepentecenta kunofanira kuva 23-27 mamita mamita.
Pathologies ye placenta
Mazuva ano, mamiriro ezvinhu echirwere anoonekwa kakawanda. Pakati pezvinyorwa zvekare zvinonzi:
- placenta previa;
- tight attachment;
- low placenta pamuviri;
- kurira kwepascenta;
- placental abruption;
- increment of the placenta;
- placental infarcts;
- kumangwanani kana kunonoka kwekutsvaira kwepentecenta;
- pleated placenta;
- kuwedzera kana kuderera zvakakomba muhukuru hweparcenta;
- kutapukira kunoputika kweparcenta;
- mapfupa emakumbo;
- intraplacental thrombi nezvimwe zvakadaro.
Kusakosha kwepascenta
Ichi chirwere chinonziwo fetoplacental insufficiency. Kusagadzikana kunoonekwa nehutano
Ngozi ye fetoplacental insufficiency inowedzera pakuvapo kwezvirwere zvisingaperi, zvirwere, zvirwere zvebonde, kusvuta uye kunwa doro zvisina kunaka.
Nokudaro, zvakajeka kuti kukwidzika kwakakodzera kwepentecenta kumudzimai kunokosha zvikuru, kubva panguva dzose pamuviri uyu muviri unogadzirisa zvinetso zvakakomba zvikuru. Zvinotarisirwa kuita zvakarongeka kutarisa kweparcenta ne ultrasound uye, kana paine chero kukanganisa kubva mumitemo, kutanga kurapwa panguva yakakodzera.