Zai Build: Vhuṱanzi

Ovum - nesheche pabonde sero, ine haploid vanochengeta okutodza. Chinangwa charo chikuru - kuchinjwa masero mashoko panguva muchangosangana. The nemamiriro zai zvakasikwa zvinogona zvikuru zvakasiyana. Somuenzaniso, zai - zviri mazai hove, zai, etc. Mumwe mhando mhuka ine maitiro ayo.

Sechivako zai shiri

Zvichida unoshamisa muenzaniso mamiriro aya ndiwo mazai shiri uye nezvinokambaira, izvo kazhinji vane zvakafanana yakarongeka. Egg - munhu zai hombe, izvo nyore kudzidza pasina chinokosha michina.

mazai yehuku ine mondo, albumen uye nevamwe. Mumwe nomumwe constituent zvikamu izvi ine maitiro ayo. The mondo chinhu gobvu, yellowish, dzeraundi mamiriro yaiva pakati zai. Rine zvakawanda kwemafuta, mapuroteni, mavhitaminzi, pigments uye zvicherwa mazai. Chinangwa chacho chikuru - ndiwo simba embryo.

Top mondo akafuka mutete uye gobvu vitelline Kamudzira, pose zvinogona kuonekwa chiduku nzvimbo yechiedza - munhu blastodisc, waiva panzvimbo vasati pakusangana oocyte neerekitironi.

Next ndiye zai chena, iyo rakakamurwa balls mana. Rine yakawanda mapuroteni, mavhitaminzi, uye zvicherwa. Uyezve, pane lysozyme - chaiyo enzayemu, rine antibacterial nomugumisiro. Kuburikidza puroteni rukoko anogona seep chete magasi.

Protein zvemapuranga podskorlupovymi balls maviri pakati iyo panova pakakoromoka. Shell Eggs - gobvu chaizvo unodzivirira goko mazai randinogara chaizvoizvo calcium carbonate. Eggshell anogona kuva thicknesses siyana uye coloring - ndiro hunhu zviri mumwe nomumwe kwemarudzi.

The mamiriro mazai dzevanhu

Vakadzi zai - zvepabonde sero, iyo yaichengetwa yakura iri follicles pakati ovary. Semhuka zvose, munhu utachiona sero chakagadzirirwa kwokupa kuva okutodza panguva kubereka.

Kusiyana somatic, utachiona masero zvinoberekwa meiosis, saka chete ane haploid (kwevanhu 23) kuva okutodza. Zvakakurukurwa sechivako mazai dzevanhu vachaparadzwa kurondedzerwa pazasi.

Yokutanga nevamwe chepfungwa - ndiyo saizi. Kana kuipa somatic zvinoriumba sero kazhinji kwazvo 20 micrometers, kuti dhayamita hadzi zai iri vanenge 100 microns. Ichi pabonde Sero wakasimba uye ari follicle kusvikira pakuguma kuibvisa kwavo.

Saka, sechivako zai akafanana nemamwe masero mumuviri - iri rinoumbwa imwe neerekitironi, cytoplasm, uye riri shoma plasma membrane. Sezvambotaurwa, kune haploid musimboti. The cytoplasm rine akawandisa ribosomes, mitochondria, uye EPS.

Uyewo, munyika sero vari zvakaenzana anoparadzirwa anonzi mondo granules, izvo zvinopa sero simba kusvikira rayo sumo kupinda uterine pamadziro. Zheltkova matema akazara zvinovaka muviri - kunyanya kwemafuta uye shoma mapuroteni, mavhitaminzi, uye zvicherwa.

hadzi zai ine chivako uye mamwe mamiriro. Somuenzaniso, muna rokunze manzete cytoplasm zvine chaiwo secretory granules. Tiine kupinda pakati dzisingaoneki kupinda granule zviri anosunungurwa uye anoita pamusoro goko ari zai - somugumisiro, izvozvo anochinja mamiriro ayo nenzira kuti hapana mumwe dzisingaoneki haagoni pinda nayo.

Chimwe dzinonakidza Chokwadi ndechokuti nhamba mazai mukadzi ari kuisa shure embryonic munguva okukura. Zviri munguva kuvandudzika ovaries ari mudumbu ratova kuumbwa imwe nhamba follicles uye oocytes. Kana zvichienzaniswa gono muviri, chirongwa paumbwe spermatozoa, sezvo pakuyaruka, zviri zvachose.

Sezvaunogona kuona, sechivako zai rakanyatsojeka uye zvinoenderana zvizere mashandiro yavanobata nayo.