Akpa amniotic

**Akpa amniotic**, nke a na-akpọkwa **akpa mmiri** ma ọ bụ **membrane**, bụ akpa ebe nwa e bu n'afọ na nwa e bu pụta na-etolite na amniotes. Ọ bụ ihe dị nro ma sie ike nke na-egbuke egbuke nke na-ejide nwa ọmụmụ na-eto eto (na nwa e bu n'afọ) ruo obere oge tupu a mụọ ya. Ihe dị n'ime membranes ndị a, amnion, na-ekpuchi **Oghere amniotic**, nke nwere Mmiri amniotic na embryo. Mkpịsị aka dị n'èzí, chorion, nwere amnion ma bụrụ akụkụ nke Placenta. N'akụkụ dị n'èzí, a na-ejikọta akpa amniotic na akpa yolk, allantois, na site na eriri umbilical, Placenta.

Akpa yolk, amnion, chorion, na allantois bụ mpempe akwụkwọ anọ extraembryonic nke dị n'èzí embryo ma na-etinye aka n'inye ihe oriri na nchebe maka embryo na-eto eto. Ha na-esite na mkpụrụ ndụ dị n'ime; nke mbụ na-esonye bụ akpa yolk na-esote amnion nke na-eto n'elu embryo na-eto eto. Amnion na-anọgide na-abụ ihe dị mkpa extraembryonic membrane n'oge niile a na-amụ nwa. Membrane nke atọ bụ allantois, nke anọ bụ chorion nke gbara embryo gburugburu mgbe ihe dị ka otu ọnwa gasịrị ma mesịa jikọta ya na amnion.

Amniocentesis bụ usoro ahụike ebe a na-anwale mmiri sitere na akpa n'oge mmepe nwa, n'etiti izu 15 na 20 nke ime ime, iji mee ihe na nchọpụta tupu amụọ nwa chromosomal abnormalities na ọrịa nwa.

## Ọdịdị ya
thumb|Oghere amniotic n'ime nwa e bu n'afọ 1.3 mm. ogologo
Oghere amniotic gbara ya gburugburu na membrane extraembryonic, nke a na-akpọ amnion. Ka mbido nke blastocyst na-aga n'ihu, obere oghere na-apụta na embryoblast, nke bụ primordium nke oghere amniotic. N'oge na-adịghị anya, amniogenic (amnion-forming cells) a na-akpọ **amnioblasts** kewapụrụ na epiblast ma kwụnye amnion, nke na-ekpuchi oghere amniotic.

### Ọganihu
thumb|Bilaminar embryonic disc na amniotic cavity na ebe a na-etinye ya
Na mbido izu nke abụọ, oghere na-apụta n'ime mkpụrụ ndụ dị n'ime, mgbe ọ na-ebuwanye ibu, ọ na-aghọ oghere amniotic. Ala nke oghere amniotic sitere na epiblast. Epiblast na-agagharị n'etiti epiblastic disc na trophoblast. N'ụzọ dị otú a, mkpụrụ ndụ epiblastic na-agagharị n'etiti embryoblast na trophoblast. A na-emepụta ala site na epiblast nke na-emesị gbanwee na ectoderm ebe mkpụrụ ndụ ndị fọdụrụnụ nke dị n'etiti embryoblast na trophoblast a na-akpọ amnioblasts (mkpụrụ ndụ dị larịị). A na-esikwa na epiblast nke a na-agbanwe ka ọ bụrụ ectoderm.   &#x5B;**'&#x5D;</sup>

Akpa amniotic na ihe jupụtara na ya na-enye mmiri nke gbara nwa ahụ gburugburu ma na-ekpuchi nwa ahụ. Ọ bụ ebe mgbanwe nke ihe ndị dị mkpa, dị ka oxygen, n'etiti eriri umbilical na nwa e bu n'afọ. Ọ na-enye ohere ka nwa e bu n'afọ na-agagharị n'enweghị nsogbu n'ime mgbidi nke akpa nwa.   A na-enyekwa nnụnụ na-efe efe.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">&#x5B;**'&#x5D;

Epiblast na-emepụta ala nke oghere amniotic ma na-aga n'ihu na amnion. Hypoblast na-emepụta elu nke oghere exocoelomic ma na-aga n'ihu na mpempe akwụkwọ exocoelomtic dị nro. Membrane a tinyere hypoblast na-emepụta akpa yolk bụ isi. Diski embryonic dị ugbu a n'etiti oghere amniotic na akpa yolk bụ isi. Mkpụrụ ndụ sitere na yolk sac endoderm na-emepụta akwa nke anụ ahụ na-ejikọta, extraembryonic mesoderma nke gbara amnion na yolk bag gburugburu.   &#x5B;**'&#x5D;</sup>

=== Ọmụmụ ===
Ọ bụrụ na, mgbe amuchara, akpa amniotic zuru ezu ma ọ bụ akụkụ buru ibu nke membrane nọgidere na-ekpuchi nwa ọhụrụ, a na-akpọ nke a caul.

Mgbe a hụrụ ya n'ìhè, akpa amniotic na-egbuke egbuke ma na-akwọ mụrụmụrụ, mana ọ siri ike.

Ozugbo a chụpụrụ nwa ahụ n'akpa nne, a na-achụpụ eriri umbilical, Placenta, na akpa amniotic n'ime akpa mgbe amuchara.

== Ọrụ ==
Akpa amniotic na ihe jupụtara na ya na-enye mmiri nke gbara nwa ahụ gburugburu ma na-ekpuchi nwa ahụ. Ọ bụ ebe mgbanwe nke ihe ndị dị mkpa, dị ka oxygen, n'etiti eriri umbilical na nwa e bu n'afọ. Ọ na-enye ohere ka nwa e bu n'afọ na-agagharị n'enweghị nsogbu n'ime mgbidi nke akpa nwa.   A na-enyekwa nnụnụ na-efe efe.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">&#x5B;**'&#x5D;

## Ihe ọ pụtara n'ihe gbasara ahụike
[./Chorio&#x3C;i&#x20;id= amnion" id="mwew" rel="mw:WikiLink" title="Chorioamnionitis">Chorioamnionitis] bụ ọzịza nke akpa amniotic (**' + amnion + **'), na-abụkarị n'ihi ọrịa. Ọ bụ ihe ize ndụ maka sepsis nwa ọhụrụ.

N'oge ọrụ nwa, akpa amniotic ga-agbaji ka a amụọ nwa ahụ. A maara nke a dị ka rupture of membranes (ROM). Dị ka o kwesịrị, ọ na-eme na mberede n'oge zuru ezu ma ọ bụ n'oge ma ọ bụ na mmalite nke ọrụ. Mgbawa nke membranes (PROM) bụ mgbawa nke amnion nke na-eme tupu mmalite nke ịmụ nwa. A na-eji amnihook ma ọ bụ amnicot eme ihe (AROM), nke a makwaara dị ka amniotomy, iji mee ka ọrụ dị ngwa.

A ghaghị ịgba akpa amniotic iji mee amniocentesis. Nke a bụ usoro a na-eme mgbe niile, mana ọ nwere ike ibute ọrịa nke akpa amniotic na ọnụ ọgụgụ dị nta nke ikpe. Ọrịa na-ebute n'ahụ nwanyị.

## Edensibia

## Njikọ mpụga

* https://www.mun.ca/biology/scarr/Amniotic_egg.html
* http://staff.um.edu.mt/acus1/IMPLANTATION.htm

Òtù:Pages with unreviewed translations