Amnion vs Chorion | Kev Txhim Kho, Qhov Chaw thiab Kev Ua Haujlwm
Ob qho amnion thiab chorion yog cov embryonic ntxiv uas tiv thaiv lub embryo thiab muab cov as-ham rau kev loj hlob thiab kev loj hlob thoob plaws hauv lub neej hauv plab. Amnion yog txheej txheej sab hauv uas nyob ib puag ncig lub amniotic kab noj hniav thaum chorion yog txheej txheej uas npog amnion, yolksac thiab allantois. Kab lus no taw qhia qhov sib txawv ntawm amnion thiab chorion hais txog lawv txoj kev loj hlob, qhov chaw thiab kev ua haujlwm.
Amnion
Raws li tau hais los saum no, amnion yog ib qho ntxiv embryonic daim nyias nyias uas kab cov kab noj hniav amniotic. Nws muaj ob txheej, qhov txheej txheej feem ntau yog tsim los ntawm mesoderm, thiab txheej sab hauv tshaj yog tsim los ntawm ectoderm. Thaum nws tau tsim thaum cev xeeb tub thaum ntxov, nws yog nyob rau hauv kev sib cuag nrog lub cev ntawm lub embryo, tab sis 4-5 lub lis piam tom qab amniotic kua pib sau nyob rau hauv nruab nrab ntawm ob txheej ua amniotic sac. Amnion tsis muaj cov hlab ntsha lossis cov hlab ntsha, tab sis muaj ntau cov phospholipids nrog rau cov enzymes koom nrog phospholipid hydrolysis.
Thawj thawj zaug amniotic kua feem ntau yog tso tawm los ntawm amnion, tab sis txog li 10 lub lim tiam ntawm cev xeeb tub, nws yog ib qho kev hloov pauv ntawm tus menyuam hauv plab ntshav ntawm daim tawv nqaij thiab txoj hlab ntaws. Amniotic kua ntim nce zuj zus, tab sis thaum kawg ntawm cev xeeb tub, muaj qhov poob sai sai. Lub luag haujlwm tseem ceeb ntawm cov kua amniotic yog los tiv thaiv tus me nyuam hauv plab los ntawm kev raug mob, tso cai txav ntawm tus me nyuam hauv plab thiab tiv thaiv kev cog lus, pab txhim kho lub ntsws fetal thiab tiv thaiv kev tsim adhesion ntawm fetus thiab amnion.
Amnion muaj nyob rau hauv cov noog, cov tsiaj reptiles thiab hauv cov tsiaj nyeg.
Chorion
Chorion yog ib qho ntxiv embryonic membrane uas npog lub embryo thiab lwm daim nyias nyias. Nws yog tsim los ntawm ntxiv embryonic mesoderm nrog ob txheej ntawm trophoblasts. Raws li hauv amnion nws tsis muaj cov hlab ntsha lossis cov hlab ntsha, tab sis muaj cov phospholipids thiab cov enzymes tseem ceeb hauv phospholipid hydrolysis.
Lub chorionic villi, uas yog ntiv tes zoo li cov txheej txheem uas tshwm sim los ntawm chorion, ntxeem tau lub endometrium thiab tso siab rau txoj hauj lwm ntawm kev hloov cov as-ham los ntawm leej niam mus rau fetus. Chorionic villi muaj ob txheej, qhov txheej txheej txheej yog tsim los ntawm trophoblasts, thiab txheej sab hauv yog tsim los ntawm somatic mesoderm. Cov chorionic villi no tau vascularized los ntawm mesoderm uas nqa ceg ntawm cov hlab ntsha. Txog thaum kawg ntawm peb lub hlis thib ob, villi npog lub chorion yog qhov loj me tab sis tom qab ntawd lawv tsim tsis sib npaug.
Nws txhawb kev tsim cov placenta.
Amnion thiab Chorion txawv li cas?
• Lub amnion yog lub puab membrane uas nyob ib ncig ntawm lub amniotic kab noj hniav thaum lub chorion yog lub txheej membrane uas nyob ib ncig ntawm lub amnion, yolksac thiab lub allantois.
• Amnion muaj cov kua amniotic, uas pab txhawb kev loj hlob thiab kev loj hlob ntawm lub embryo, thaum chorion ua raws li kev tiv thaiv kev tiv thaiv.
• Lub amnion muaj mesoderm thiab ectoderm thaum lub chorion yog ua los ntawm trophoblasts thiab mesoderm.
• Chorion muaj tus ntiv tes zoo li cov txheej txheem hu ua chorionic villi.
