Txoj hlab ntaws qoob loo kuj tseem hu ua tus kab mob qoob loo (Latin funiculus umbilicalis). Nws muaj nuj nqi yog mus txuas rau lub embryo, thiab ces tus fetus nrog leej niam lub cev. Qhov ntev ntawm txoj hlab ntaws hauv ib tug neeg nce mus txog 50 - 70 cm lossis ntau dua. Qhov no pub rau tus me nyuam hauv plab tsiv mus rau hauv lub uterine kab noj hniav. Hauv tus me nyuam mos liab, txoj hlab ntaws qis yog li 2 cm ntawm tuab tuab. Outwardly nws yog resilient, zoo li ib tug tuab roj hmab hose nrog tus thiab shiny shells.
Qhov qaub qaum qaum tuaj qhov twg los?
Txoj hlab ntaws qoob uas txuas nrog rau lub tsho me nyuam hauv plawv los yog sab nraub. Nws tshwm sim rau hauv cov hlab ntaws qaum koom lub plab hauv plab, thaum uas tsis tau mus rau lub tsho me nyuam.
Thaum twg lub umbilical qaum tshwm?
Nws yog qhov zoo paub tias, pib ntawm 2-3 lub lim tiam ntawm cev xeeb tub, nws yog nyuam qhuav pib rau, thiab los ntawm 2 lub hlis nws tau loj hlob mus rau qhov loj me. Tab sis, muaj cov "kanatiki" tsuas yog txog li 40 cm ntawm qhov ntev, los yog ncav tshaj 1 meter! Xws li qhov txawv txav ntawm txoj hlab ntaws qoob loo yog qhov tseem ceeb rau kev khi pob tawb thiab lwm yam teeb meem.
Kab mob siab kho mob
Qhov loj tshaj plaws yog txoj hlab ntaws ntawm qhov ntev ntawm qhov ntev: qhov ntev lossis luv luv umbilical qaum, yog vim li cas rau qhov zoo li ntawm qhov kev tsis sib thooj tsis paub meej.
Nrog txoj hlab ntaws ntev (70-80 cm), uas tshwm sim ntau zaus, yug me nyuam tuaj yeem tsis muaj teeb meem. Txawm li cas los xij, nws muaj peev xwm hais tias nws yog qhwv los ntawm ntau qhov chaw ntawm lub fetus, uas tuaj yeem tshwm sim vim muaj kev txav ntawm tus me nyuam. Qhov kev liam no yuav yog ib qho thiab ntau yam. Muaj tseem muaj qhov nruj-netgo sis. Tag nrho cov rooj plaub yuav tsum nyob ze ntawm koj tus kws kho mob.
Ib txoj hlab ntaws qis luv luv, tsawg dua 40 cm, tsis tshua muaj 10-20 cm, tuaj yeem ua rau pom kev zoo ntawm ib qho chaw tsis raug cai hauv plab. Thaum yug me nyuam, ib qho kev mob xws li ib qho qaub ncaug qis qis mas feem ntau yog vim li cas lub fetus txav qeeb qeeb dhau ntawm kev yug me nyuam, thiab lub tsho me nyuam mus kuaj tsis tau.
Ib txoj hlab ntaws hnyav tuaj yeem ua rau muaj kev tiv thaiv ntev ntawm lub qhov txhab umbilical. Yog li, koj yuav tsum ua tib zoo saib tom qab nws.
Qhov tom qab yug me nyuam yog txoj hlab ntaws (umbilical qaum)?
Feem ntau, txoj hlab ntaws ntawm tus me nyuam mos liab yog ib qho kev kuaj tshwj xeeb uas qhov kev tshawb fawb tau ua tiav. Tam sim no nws tau rais los ua tus qaum qaum rau cov qia cell cia chaw, qhov chaw uas cov hlwb raug muab rho tawm ntawm txoj hlab ntaws thiab khaws cia thoob plaws hauv lub neej ntawm ib tug neeg. Zoo, nyob rau hauv tej zaum, txoj hlab ntaws yog muab pov tseg hauv tsev kho mob.