Vhiki 3 yenhumbu

Isu tinoenderera mberi neyedu yakakosha «Kubata Pamuviri Svondo nevhiki»: mushure vhiki 1 y the 2, tinosvika pakusangana. Imwe yeakanyanya kunaka uye anonakidza maitiro mune zvakasikwa pasina mubvunzo kusangana. Kupfuura mufananidzo wekare wekubatana pakati pezai nembeu, ungada kuziva kuti kuita uku kunosanganisira nhevedzano yenhanho dzinoshamisa dzatisina kumboudzwa nezvadzo mukirasi, uye kuti "Madres Hoy” tinoda kukuzivisai.

Isu tiri mune iyoyo yakakwana chemakemikari kutamba uko maviri maseru ebonde kana mageteti ari kuenda kuchinjana avo ma chromosomes, asi kwete usati waita hwakanakisa uye hunyanzvi mujaho uko imwe chete urume inoenda kusvika kune iro chibereko. Izvo zvinoitika zvinotevera zvine chakavanzika chikuru uye kupokana kwesainzi, ipapo uko maviri madiki maseru anopa nzira kune akateedzana shanduko kutsanangura zvishoma nezvishoma izvo zvatinodaidza kuti "hupenyu". Tinokutsanangurira iwe.

Fertilization nhanho nhanho

Wanga uchiziva here kuti zai rinongo pfuura 0.135 ml paupamhi? Urume hwakatove hudiki, uye zviripo, panogona kuve nemamiriyoni ari pakati pegumi nemakumi matanhatu nemazana emamiriyoni muhurume hwega hwega. Zvino, asi pakati pavo vese, vangangoita mazana mashanu chete vanosvika pachikamu icho chinozoiswa nourume.

Ngatione chimwe nechimwe chezvikamu zvacho.

Rwendo rurefu runotanga.

Ichi chiitiko chinotanga apo urume hwakaiswa mukati memukadzi. Iyi nzvimbo haisi nharaunda inonakidza, yakanyanyisa acidic uye nekudaro urume hunomanikidzwa kutsvaga imwe nzvimbo ine alkaline, nokudaro ichipfuura ichibva chibereko kune fallopian machubhu mumaawa mashoma.

Kamwe mune fallopian machubhu, urume hunogona kurarama kwema 48 kusvika 72 maawa. Nekudaro, kusangana kunogona kuitika pakati pemazuva maviri kana matatu mushure mekuita zvepabonde.

Iri mune kosi iyi apo chikamu chikuru cheaya mamirioni ehurume chakarasika, zvichideredza kune vashoma vane rombo rakanaka vanozopinda nemumembere.
chezai racho kupa nzira yekudyara.

Munguva yerwendo urwu, chirume chinowana kurasikirwa kwakasarudzika kwemutsara wemisoro yavo.. Izvi zvinokonzerwa nechikonzero chakakosha kuziva chikonzero: kuitira kuti nhevedzano yekuchinja kwemakemikari yakakosha kupwanya kuburikidza neovule inogona kutanga.

Kupinda kwekorona inopenya

Kuti unzwisise zvirinani iyo nhanho dzekusangana dIsu tinofanirwa kufungidzira ovule seye capsule mhuka dzakachengetedzwa mukusiyana nematanho akasiyana. Imwe yadzo, yekunze zvakanyanya ndeyeiyo inopenya kana inopenya korona.

Korona inopenya inoumbwa nematanho akati wandei ane basa rekupa mapuroteni kune iro chibereko.
Urume hunosvika pano kuzotanga kufambira mberi kwakaomarara pakati pemasero ese e follicular. yakakomberedza chimiro ichi. Vanozviita nekuda kwerudzi rwe enzyme inovabvumira kuvhura migero yakasiyana. Zvakaoma chaizvo!

Kusvika munzvimbo zona pellucida

Urume hwakatopfuura kuburikidza necorona radiata uye zvino vava mu chechipiri chipingaidzo chavanofanira kuyambuka. Vachaita saizvozvo nekuda kwerudzi rwe enzyme iyo ichaunza shanduko muhurume pachahwo, zvichikonzera izvo zvinozivikanwa sekuita acrosome reaction.

Muchikamu chino, haazi ese urume huchaita nenzira iyi. Chinangwa chekupedzisira ndechekuti mhando chaiyo yechimiro iwoneke: iyo acrosomic filament- Chinangwa chayo? Yakapusa kwazvo, ita bata nesero membrane yeiyo ovum. Nhanho yekupedzisira ...

Iko kusanganiswa

Kunyangwe hazvo urume hushoma chete hwasvika zona zona pellucida, iyi hondo yekupona uye enzymatic reaction inobvumidza rombo kuve neumwe chete, iyo inogona kupedzisira yasangana neplasma membrane yeoocyte nekuda kweacrosomal filament. Kana izvi zvikaitika, nhevedzano yeshanduko inonakidza inotangwa:

Nhengo dzinotanga kusanganisa kuburikidza neshanduko dzakasiyana-siyana dzeIonic uko kunamatira kwakawanda urume kune oocyte kwakavharwa.

Kufona kwacho kunooneka kubereka cône, Chinangwa chayo ndechekutendera musoro, chidimbu chepakati uye muswe wembeu kuti upinde muoocyte cytoplasm.

Fertilization inoitika kana iyo nuclei fuseZvese zviri zviviri musoro wechirume wakasvika muzai nezai pacharo. Ipapo ndipo panoungana chromosomes makumi mana nenhanhatu (sero rega rega repabonde rinopa makumi maviri nematatu), nekudaro kuumba chinoshamisa chromosome chipo chemumwe munhu.

Kunyangwe chiri chokwadi kuti hafu yeruzivo ruzivo inowirirana nababa naamai, lMubatanidzwa unoburitsa iyo kusikwa kwemunhu akasarudzika uye asingadzoreke, iyo panguva ino inonzi zygote uye kuti mushure memwedzi mipfumbamwe yeshanduko, kukura uye zvishamiso zvakavanzika zvatichatsanangura muzvinyorwa zvinotevera, zvichapa nzira kune munhu mutsva.

Vhidhiyo inotevera Izvo zvinobatsira iwe kuti uzive zvishoma zvishoma nezve kushamisika kwekusangana:

Tinokukoka iwe kuti uzive kuti uwane chinotevera chikamu chepamuviri nhanho nhanho ...