Interestingly, thaum nws yuav tus me nyuam ua ntej yug tus me nyuam?

Los ntawm cov thawj hnub, thaum ib tug poj niam pom nws yog cev xeeb tub, nws tam sim ntawd pib txhawj txog nws tus me nyuam. Tag nrho cov Yog nws ploj lawm yog nws npaj thiab yuav ua li cas nws muaj, nyob rau hauv lub plab? Yog li ntawd, tos niam xav paub ntau li ntau pab tau cov lus qhia txog txoj kev loj hlob ntawm tus me nyuam nyob rau hauv lub tsev menyuam. Ib tug heev nthuav lub ntsiab lus yog yuav ua li cas noj tus me nyuam ua ntej yug tus me nyuam.

cell

Tag nrho tej zaum paub tias thaum lub sij hawm ntawm nws yug los, txhua txhua tus me nyuam mus los ntawm ob peb theem ntawm txoj kev loj hlob. Yog li ntawd, nws yuav tus me nyuam ua ntej yug tus me nyuam mus rau nws tus thawj theem - tom qab lub merger ntawm lub qe thiab cov phev rau lub caij thaum cov fertilized cell yog entrenched nyob rau hauv lub plab? Muab pab tau tshuaj tus menyuam hauv plab yog vim tsub zuj zuj nyob rau hauv lub nkaub qe sac reserves. Lawv muaj txaus rau ib lub lim tiam. Txawm li cas los, tom qab lub sij hawm no, lub cell yuav tsum twb muab tsau hauv cov plab thiab yav tom ntej tot txav mus rau ib tug tshiab theem ntawm lub hwj chim.

embryo

Nws tau pub mov rau tus me nyuam ua ntej yug me nyuam ntawm cov theem tom ntej, thaum lub cell yog twb tsau nyob rau hauv lub plab? Ntawm no yog peb xav nyob rau hauv tus txheej txheem ntawm tsiv mus rau ib tug tshiab, ib qho tseem ceeb theem: hwj chim los ntawm lub tsho me nyuam. Nws yuav tsum tau muab sau tseg hais tias qhov no hom ntawm noj ib tug me nyuam nyob rau hauv lub plab yog lub tseem ceeb tshaj plaws rau tus me nyuam yug thiab plays ib qho tseem ceeb luag hauj lwm nyob rau hauv nws txoj kev loj hlob. Yog li ntawd yuav ua li cas puas tau nws tag nrho cov tshwm sim? Txhua yam uas noj niam tau txais nws cov ntshav. Thiab ntawm nws cov ntshav nrog tshwj xeeb villous tsev me nyuam captures cov as-ham uas thiab tau txais cov me nyuam yaus. Paub li cas los noj tus me nyuam nyob rau hauv lub plab, txhua txhua cev xeeb tub poj niam yuav tsum ua tib zoo saib xyuas lawv cov kev noj haus kom nws ib qho kuam me me tau txais raws li ntau cov as-ham li sai tau. Nws tseem ceeb heev tsis txhob saturate lub cev ntawm tus me nyuam originated lub "tsis yog" cov khoom noj uas yuav tsis tau txais txiaj ntsim yog leej niam los yog nws tus me nyuam. Thiab nco ntsoov mus muab noj nqos tau cov vas nthiv zaub mov, haus dej cawv thiab haus luam yeeb.

lawv tus kheej lub cev

Tseem nws yuav tus me nyuam ua ntej yug tus me nyuam? Qhov no yuav tshwm sim tau los ntawm txoj kev ntawm lub chaw ua hauj lwm ntawm nws tus kheej hauv nruab nrog cev, uas yog yuav luag tag tsim twb nyob rau lub plaub los yog tsib lub hlis uas cev xeeb tub. Tus me nyuam yuav nqos amniotic kua, nplua nuj nyob rau hauv qab zib, amino acids thiab lwm yam kev pab enzymes, thiab lawv yuav npaj tus mob huam los ntawm ib tug tus me nyuam yog ib tug twb tau nws tus kheej-noj. Zoo Tsim Nyog noj cov zaub mov, ua tsaug rau uas yuav tau siab saturate lub cev tus me nyuam, hu ua qhov no zoo ntawm cov as-ham noj yog tseem tsis yooj yim sua, tab sis tag nrho cov mus.

ua tsis taus pa

Nyob rau hauv tas li ntawd mus rau lo lus nug ntawm yuav ua li cas tus me nyuam mos cov khoom noj nyob rau hauv lub plab leej niam, cov poj niam kuj yuav xav nyob rau hauv tseem yog: yuav ua li cas ua tsis taus pa tus me nyuam nyob rau hauv lub plab? Yog hais tias ib tug neeg hais tias, ua li, kuv niam ua li nws rau ob tug, koj yuav tsum tsis txhob mloog tej tus neeg. Nws thawj ywj siab ua tsis taus pa ib qho kuam me me yuav ua rau tom qab nws yug los, nyob rau hauv lub plab, nws nqus pa dua nrog kev pab los ntawm lub tib lub tsev me nyuam. lub tsho me nyuam los ntawm cov niam cov ntshav, nyob rau hauv tas li ntawd mus cov as-ham uas yuav tsum tau muab rau tus me nyuam grabs thiab oxygen, thiab nyob rau tib lub sij hawm muab cov pa roj carbon dioxide. Qhov ntawd yog yuav ua li cas tus me nyuam ua pa. Nws yuav tsum tau muab sau tseg tias tag nrho maturation ntawm lub pa system tshwm sim kwv yees li rau lub 34th lub lim tiam ntawm cev xeeb tub, uas yog vim li cas cov me nyuam mos yug los ua ntej hnub no yuav ua tau ib tug heev loj teeb meem vim tsis qhia tawm hauv lub ntsws.