Cov txheej txheem sab nraud ntawm cov placenta, chorion, tuaj rau hauv kev sib cuag nrog endometrium; Nws yog tsim los ntawm ob txheej ntawm cov hlwb - sab hauv cytotrophoblast thiab sab nraud syncytiotrophoblast. Lub chorion thiab allantois fuse tsim cov chorioallantoic membrane. Ib qho kab noj hniav allantoic yog qhov tseem ceeb hauv quadrupeds (Daim duab 5-31).
Cov qog ntshav qab zib yog dab tsi?
Lub hnab ntim nrog kua ua los ntawm tus menyuam hauv plab (kua amniotic)thiab daim nyias nyias uas npog lub fetus sab ntawm lub placenta (amnion). Qhov no tiv thaiv tus menyuam hauv plab los ntawm kev raug mob. Nws kuj pab tswj qhov kub thiab txias ntawm fetus.
Puas yog placenta zoo rau koj?
Thaum ib txhia hais tias placentophagy tuaj yeem tiv thaiv kev nyuaj siab tom qab yug menyuam; txo cov ntshav tom qab yug me nyuam; txhim kho kev xav, lub zog thiab kev noj mis nyuj; thiab muab cov micronutrients tseem ceeb, xws li hlau, tsis muaj pov thawj tias noj cov placenta muab txiaj ntsig kev noj qab haus huv. Placentophagy tuaj yeem tsim teeb meem rau koj thiab koj tus menyuam.
How is the placenta created?
Feem ntau, ib zaug lub qe fertilized nyob rau hauv lub uterine phab ntsa, cov placenta pib tsim. Tab sis lub pob pib dov ob peb hnub ua ntej cog. Thaum koj ovulate, lub qe tawm ntawm lub zes qe menyuam mus rau hauv txoj hlab qe menyuam hauv kev cia siab tias yuav tau fertilized.
Puas yog cov qog ua ntshav?
Oxygen thiab cov as-ham los ntawm leej niam cov ntshav raug xa mus hla cov placenta mus rau tus menyuam hauv plab los ntawm txoj hlab ntaws. Qhov noenriched ntshav ntws los ntawm umbilical leeg mus rau tus me nyuam lub siab. Nyob ntawd nws txav mus los ntawm lub shunt hu ua ductus venosus.
