Inyanga yesibili yokukhulelwa iqala ngeviki lesihlanu. Kulesi sikhathi ubude bombungu kakade buyi-7.5 cm. Phakathi nenyanga yesibili yentuthuko ye-intrauterine, uhlelo oluyisisekelo senzwa, ubuchopho, umgogodla, kanye nezinhlayiya zocansi zezingane ezizayo zakhiwa. Phakathi nalesi sikhathi, isibindi nesiguli se-thyroid nazo zikhula. Ngakho-ke, kubalulekile kakade phakathi nalesi sikhathi sokukhulelwa ukukhokha ngokukhethekile ekudleni. Faka phakathi kokudla okudla okune-iodine, okudingekayo ekubunjweni kwegciwane le-thyroid.
Ngenyanga yesibili yokukhulelwa, ikhanda le-fetal liseduze kakhulu nesiqu, liboshwe esifubeni. Kakade kusukela ezinsukwini ezingu-31-32 kunezinhlawulo zezandla nezinyawo ezifana namahlombe. Ngeviki lesithupha, ukuqala kweso elizayo kuyakhiwa. Izinzwa zivela ekhanda le-embryo. Ngaphezu kwalokho, isikhumba sesisu sisakhiwe ngesonto lesithupha, inhliziyo nenqubo yokujikeleza.
Phakathi nesonto lesikhombisa lokuthuthukiswa kwe-intrauterine, izinqubo ze-organogenesis zenziwa ngokuphindaphindiwe. Imizimba ethuthukisiwe neyithuthukisiwe esungulwe emavikini odlule. Emithanjeni yegazi yombungu, kukhishwa omunye, ophakathi kwe-embryo ne-placenta. Ngokulandelayo, uguqulwa waba yisixhumanisi esiyinhloko phakathi komama nengane - i-placenta. Kanti futhi phakathi nalesi sikhathi, iminwe isakhiwe ezindlebeni, ezisezincane futhi ezincane. Ubude bombungu ekupheleni kweviki lesikhombisa seluvele luyi-12-15 cm. Njengoba ubona, emavikini amabili aphindwe kabili.
Kusukela ngesonto lesishiyagalombili, umbungu uqala ukukhula ngokushesha, izitho eziningi zakhiwe kakade, ngakho ukukhula nokusebenza kwazo okusebenzayo kuyenzeka. Ikusasa ingane isenaso ubuso: umlomo, impumu, izindlebe. Ngaphezu kwalokho, kukhona umehluko ophawulekayo kwisakhiwo sezitho zangasese. Inhloko ye-embryo cishe ilingana nobude be-trunk. Kusukela ngalesi sikhathi umbungu uba yisithelo. Ubude bayo buba ngu-20-30 mm, nesisindo - amagremu angu-13.
Kuyathakazelisa ukwazi ukuthi ngenyanga yesibili yentuthuko ye-intrauterine wonke uhlelo lwe-bone-joint of the fetus luyaqhubeka, i-trunk yenziwa futhi ikhula. Amajwabu amehlo avela emehlweni e-fetus. Uyakwazi ukuvula umlomo wakhe, futhi ukuhambisa iminwe yakhe. Imilenze ye-fetus touch. Phakathi nalesi sikhathi, intombazane enkulu iqala ukwenza umsebenzi wayo wokusebenza.
Kuyithinta ngubani ozoba, umfana noma intombazane
Futhi yonke into yezofuzo ... Amangqamuzana omzimba wesintu aqukethe ama-chromosomes angu-23, ngokungafani nawo wonke amanye amaseli, anama-chromosomes angu-46. Ama-Chromosomes kusukela kokuqala kuya kumabili amabili wesibili sesimo esifanayo. Lawa angama-chromosomes somatic. Kodwa ama-chromosomes omabili we-23 afanayo kuphela kwabesifazane. Lona i-chromosome XX. Kodwa-ke, emadodeni, ama-chromosome alawa maqembu ahlukile, ngakho-ke aqokiwe njenge-chromosomes ye-XY. Ngakho-ke, uma iqanda lifaka i-X-spermatozoon, intombazane "iyakuthola", futhi uma i-Y isilisa ikhula, kusho ukulinda umfana.
Imizwa yowesifazane okhulelwe
Ngicabanga ukuthi iningi labesifazane, kusukela ngenyanga yesibili yokukhulelwa, "banjiswe" emhlabeni wezinzwa ezintsha. Awuzange nje uyeke ukuya esikhathini, kepha kungase kube khona i-toxicosis yokukhulelwa, kuboniswe yisicanuche nokuhlanza, njengokuphendulela ekudleni nokuphunga. Ukushaya ikhanda, ukulala, ukuzondeka ngezikhathi ezithile, ubuthakathaka obuthakathaka bungenzeka. Ekupheleni kwenyanga yesibili yokukhulelwa owesifazane angase azizwe ngisho nokuncane kwezingubo ezinqeni zakhe. Phakathi nalesi sikhathi, kungase kube khona izidakamizwa ekudleni okuthile, ukulangazelela okumuncu, usawoti noma okumnandi. Ngizikhumbula mina, ukuthi ngifuna ngempela inyama, futhi ngokuvamile ngidla.
Izinguquko ezintsha ezinjalo emzimbeni ziwumphumela wokuzivumelanisa nesimo "esithakazelisayo" esisha. Ezinye izinguquko ezingokomzwelo zingase zivele, njengokuthi: ukufutheka, ukucasuka, imizwa yokukhathazeka, ukushintsha kwemizwelo.
Inyanga yesibili yokukhulelwa kuyindlela yokuguquka, lapho owesifazane kufanele abukeze indlela yakhe yokuphila, ukudla okunomsoco, umbuso wokusebenza, njll. Ukuthuthukiswa okuzuzisayo kwe-fetus ngenyanga yesibili yokukhulelwa, kubalulekile ukukhipha umphumela wezici ezihlukahlukene ezilimazayo. Okukhethwa kukho kungukuthatha amasonto ambalwa ukuphumula futhi uhambe emoyeni omusha. Uma ungakabhaliswa ekubonisaneni kwabesifazane, manje sekuyisikhathi sokuya ku-gynecologist. Uzokunikeza izincomo eziwusizo ngokudla, ubeke zonke izivivinyo ezidingekayo uphendule imibuzo eyokuthandayo.