Nwa ebu n'afọ na mmepe: isi nkebi

Natal mmepe nke onye ahu - oge site guzobe nke zaigọtụ (nke nwere akwa egg) na ọmụmụ nke a n'ụzọ zuru ezu kpụrụ nwa ebu n'afọ na-viable edem akpa nwa nwanyi.

Oge a na-akpọ antenatal. Ọ dịruru 280 ụbọchị. Ịmata ihe dị iche ndị na-esonụ nkebi nke mmepe nke nwa ebu n'afọ:

• mbụ oge - ji fragmentation nke ndị ịmụpụta egg, guzobe nke blastula na ya nkunye n'ime lining nke akpanwa. Njikọta emee ihe anọ na nke gametes inyom na ndị ikom, nke a kpụrụ zaigọtụ na a diploid mkpụrụ ndụ ihe nketa ngwa. Na nke a, nwa ahụ mmekọahụ kpebisiri ike site chromosomes nke spam na ịmụpụta akwa. Ka ihe atụ, ọ bụrụ na ọ nwere ihe X-chromosome, mgbe ahụ, a girl, ma ọ bụrụ na m na - na nwata. The mbụ ndinuak ogbo ewe ebe fallopian tube. The usoro na-agwụ na gwara nkunye nke a ịmụpụta egg na ọkpụrụkpụ nke mucous oyi akwa nke akpanwa, ebe ya n'ihu na-aga ya mmepe;

• ọge mmalite ọkpụkpụ - guzobe nke ẹmbrayo na ntọala ya esịtidem akụkụ. Intrauterine nwa ebu n'afọ na mmepe na a ogbo bụ a usoro nke gastrulation na nke na-guzobere atọ ngidịrigi izizi. Ọzọkwa, ọ na e gosiri ẹkenịmde histo- na organogenesis (tọrọ anụ ahụ na akụkụ). Asatọ izu nwa ugbua nwere a arọ nke ihe 4 grams. Ọ depụtara ndị na-kpụrụ aka na ụkwụ;

• nwa ebu n'afọ na oge - na-esonyere n'ihu na mmepe nke ẹmbrayo, nke a na-ama a maara dị ka mkpụrụ nke atọ n'ọnwa nke afọ ime. Dị ka e gosiri na ọkpụkpụ osifikeshịọn ntọala kpụrụ, ikpa kpuchie efu amalite-nụrụ obi otiti nke nwa ebu n'afọ, nwaanyị na-ele ya mmegharị. Nwa ebu n'afọ na mmepe n'oge a e ji ufiop Filiks nke ibu na anụ ahụ iche.

Ikpeazụ ogbo bụ nnyefe. Ha mmalite na-triggered site na ntọhapụ nke ndị hormone oxytocin, nke na-emepụta site na pituitary gland. Nke a hormone akpali eriri akpa nwa muscle, nke na-eduga ná nwa push n'ime pelvis na ọmụmụ kanaal.

Ọ ga-kwuru na mmepe nke nwa ebu n'afọ na utero e ji ụfọdụ oké egwu oge na nke ẹmbrayo a hụrụ hypersensitivity ka oghom mpụga ihe. Ọnwa atọ mbụ nke afọ ime, nakwa dị ka ọrụ mmanye, na-achọ uche pụrụ iche na ọnọdụ nke nwanyị dị ime. N'okpuru nduzi na oge nke na-adịghị mma gburugburu ebe obibi ihe-amụba ihe ize ndụ nke dị iche iche abnormalities na deformities nakwa dị ka nsogbu n'oge ma ọ bụ mgbe nnyefe.

Ọ kwesịkwara kwuru na nwa ebu n'afọ na mmepe na-esonyere guzobe a pụrụ iche ngwa - Plasenta, nke na-enye ohere ka ha mụọ ụmụ nọ n'afọ. Ọ bụ ihe dị oké mkpa ụzọ ịmụta na gburugburu ebe obibi. Ya isi ọrụ - isonye na gas mgbanwe nke nwa ebu n'afọ, ya ọkọnọ nke nri na oxygen, nakwa dị ka ndị secretion nke homonụ na-enye nkịtị N'ezie nke ime.