Video: Vim li cas cov hlwb hloov pauv hloov lawv cov duab?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov no cell yog hu ua kev hloov pauv vim lawv muaj peev xwm undergo a hloov hauv lawv cov duab thiab qauv. Tsis tas li ntawd, lub cell yog stratified, uas txhais tau hais tias lawv tsim ob peb txheej. Cov stratified hlwb ntawm transitional epithelium muab kev tiv thaiv thiab tso cai rau cov nkoj nthuav dav kom haum rau cov kua.
Ib yam li ntawd, nws raug nug, dab tsi yog qhov tshwj xeeb ntawm kev hloov pauv ntawm epithelium?
Feem ntau epithelium kua muag thaum lawv stretched los yog deformed ntau, tab sis yog hais tias tus transitional epithelium ntawm lub zais zis tau nthuav tawm qeeb (raws li nws tau ntim nrog kua), cov kab mob me me ua rau sab hauv epithelial cov cell tuaj yeem sib txuas nrog cov cell membrane, tso cai rau thaj tsam ntawm tes nthuav dav.
Tom qab ntawd, lo lus nug yog, thaum lub zais zis tau nthuav dav cov kab mob hloov pauv epithelial yog cov duab zoo li cas? Daim duab qhia txog phab ntsa tso zis tso zis nyob rau hauv lub xeev so (tsis distended). Thaum cov ntaub so ntswg ncab , cov hlwb , tshwj xeeb tshaj yog nyob rau saum npoo, ua tiaj. Qhov no tso cai rau lub cev lined nrog transitional epithelium hloov puab tsis ua kom puas epithelial hauv ob sab phlu.
Hauv qhov no, qhov hloov pauv ntawm epithelium zoo li cas?
Qauv. Cov tsos ntawm transitional epithelium nyob ntawm cov txheej uas nws nyob. Cells ntawm lub basal txheej yog cuboidal, los yog lub voos xwmfab-zoo li tus, thiab columnar, los yog kem-puab, thaum lub hlwb ntawm lub superficial txheej txawv nyob rau hauv tsos nyob ntawm seb qhov degree ntawm distension.
Vim li cas lub zais zis muaj kab nrog epithelium hloov pauv?
Tsis zoo li cov mucosa ntawm lwm yam kabmob hauv nruab nrog cev, lub zais zis tso rau ntawm txoj hlab ntaws epithelial cov ntaub so ntswg uas muaj peev xwm ncav cuag qhov loj kom haum rau cov ntim loj zis . Transitional epithelium kuj muab kev tiv thaiv rau cov cov ntaub so ntswg los ntawm acidic los yog alkaline zis.
Pom zoo:
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