Cervix vs Uterus
Tsev menyuam thiab ncauj tsev menyuam yog ib qho tseem ceeb ntawm cov leeg pob txha ntawm cov menyuam yaus. Cov qauv no pab txhawb kev loj hlob ntawm embryo thiab fetus thaum cev xeeb tub. Nyob rau hauv lub sij hawm tsis xeeb tub, uterus thiab cervix pab tswj lub cev xeeb tub lub sij hawm thiab muab kev tiv thaiv rau lub cev xeeb tub ntawm poj niam. Lub physiologies ntawm lub tsev menyuam thiab lub tsev menyuam yog tswj los ntawm cov tshuaj hormones.
Image 1: Poj Niam Kev Loj Hlob
Yuav Uterus
Uterus yog pear-puab cov leeg nqaij hauv cov poj niam cev xeeb tub. Nws yeej muaj peb yam tseem ceeb; fundus, lub cev, thiab lub ncauj tsev menyuam. Lub Fundus yog qhov nthuav dav tshaj plaws, qhov chaw qhib ntawm cov hlab ntsha tuaj. Lub cev yog qhov nqaim thiab constricted thaum lub ncauj tsev menyuam yog lub caj dab cheeb tsam uas txuas rau qhov chaw mos. Uterus feem ntau yog 7.5 cm ntev thiab 5 cm dav thiab muaj phab ntsa txog 2.5 cm tuab. Thaum lub sij hawm cev xeeb tub, uterus ua hauj lwm raws li ib tug barrier uas tiv thaiv cov kab mob nkag mus rau hauv lub tsev me nyuam thiab plab kab noj hniav ntawm qhov chaw mos. Thaum cev xeeb tub, nws yog qhov chaw ntawm kev loj hlob ntawm embryo thiab fetus. Thaum yug los, nws pab tshem tus menyuam hauv lub cev.
Image 2: Uterus
Cervix yog suav tias yog ib feem ntawm kev ua me nyuam hauv cov poj niam thiab suav nrog qhov qis ntawm lub tsev menyuam, yog li hu ua 'qis uterine segment'. Nws yog roughly cylindrical nyob rau hauv cov duab, txog 2.5 mus rau 3 cm nyob rau hauv ntev thiab 2. 5 mus rau 3 cm nyob rau hauv kab rov tav txoj kab uas hla. Cervix yog tsim los ntawm cov ntaub so ntswg ruaj khov. Txog 2 cm ntawm lub ncauj tsev menyuam protrudes rau hauv qhov chaw mos thiab qhov seem yog intraperitoneal. Cov kab noj hniav ntawm lub ncauj tsev menyuam yog lub npe hu ua cervical kab noj hniav lossis lub ncauj tsev menyuam, uas lub tsev menyuam sib txuas lus nrog qhov chaw mos. Lub ncauj tsev menyuam qhib rau hauv tsev menyuam los ntawm 'internal os' thiab mus rau hauv qhov chaw mos los ntawm 'sab nraud os'. Uterine hlab ntsha muab ntshav rau lub ncauj tsev menyuam. Lub ectocervix uas protrudes rau hauv qhov chaw mos yog lined los ntawm squamous epithelium, thiab lub endocervical kwj dej, uas yog lub passageway ntawm sab nraud os thiab sab hauv os, yog lined los ntawm ib tug columnar. Qhov no columnar epithelium muaj cov qog nqaij hlav hauv tsev menyuam, uas tsim cov alkaline mucous (cervical mucous). Cervix tiv thaiv kab mob nkag mus rau hauv lub tsev menyuam thiab plab kab noj hniav los ntawm qhov chaw mos.
Cervix thiab Uterus txawv li cas?
• Cervix yog ib feem ntawm lub tsev menyuam; nws ua rau qhov qis ntawm lub tsev menyuam.
• Uterine kab noj hniav thiab qhov chaw mos sib txuas los ntawm lub ncauj tsev menyuam.
• Uterus yog pear-puab cov leeg nqaij, whereas lub ncauj tsev menyuam yog ib tug cylindrical zoo li tus qauv nrog endocervical kwj dej.
• Uterus muab ib qhov chaw los tsim embryo thiab fetus, hos lub tsev me nyuam tiv thaiv kab mob nkag mus rau hauv lub tsev me nyuam kab noj hniav thiab lub cev kab noj hniav.
Source:
Image 2: Teixeira, J., Rueda, B. R., and Pru, J. K., Uterine Stem cells (September 30, 2008), StemBook, ed. Lub Zej Zog Kev Tshawb Fawb Stem Cell, StemBook, doi/10.3824/stembook.1.16.1,
