Video: Cov nqaij leeg sphincter pom nyob qhov twg?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Sphincters tiv thaiv reflux ntawm cov ntsiab lus luminal. Du nqaij sphincters yog pom ntawm lub plab zom mov sib txuas, lub plab zom mov sib txuas, qhib lub zais zis, ileocolonic hlws ris, thiab txiav cov hnyuv loj hauv thaj tsam recto-sigmoid ntawm txoj hnyuv loj (Daim duab 1.2).
Ib yam li ntawd, sphincters yog dab tsi thiab lawv nyob qhov twg?
Qhov qis sphincter, lossis mob plawv sphincter, nyob rau sab saud (cardia) ntawm lub plab. Ntawm lub qhov quav, muaj ob sphincters uas tswj kev tawm ntawm cov quav los ntawm lub cev (saib sab hauv qhov quav thiab sab qhov quav sab nraud). Sab hauv sphincter tsis tuaj yeem ua haujlwm thiab sab nraud yog nyob ntawm yeem.
Kuj Paub, dab tsi yog sphincters muaj los ntawm? Yog li, sab hauv sphincter yog muaj los ntawm cov leeg nqaij thiab yog sab hauv los ntawm lub cev tsis muaj zog, thaum sab nraud sphincters yog ntawm cov leeg nqaij thiab muaj somatic (yeem yeem) sab hauv muab los ntawm cov hlab ntsha hu ua pudendal qab haus huv.
Tom qab ntawd, ib tus tuaj yeem nug, lub luag haujlwm ntawm cov leeg nqaij yog dab tsi?
Cov sphincter cov leeg ua raws li lub valve los tswj qhov ntws ntawm ib feem ntawm cov zaub mov digested ntawm lub plab mus rau cov hnyuv.
Lub sphincter nyob deb npaum li cas?
Anatomy. Sab nraud qhov quav sphincter ntsuas li 8 mus rau 10 cm nyob rau hauv ntev, los ntawm nws anterior mus rau nws posterior extremity, thiab yog hais txog 2.5 cm opposite lub qhov quav, thaum defecation tshwm sim. sphincter cov leeg retracts.
Pom zoo:
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