Video: Transitional epithelium zoo li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Qauv. Cov tsos ntawm transitional epithelium nyob ntawm cov txheej uas nws nyob. Cells ntawm basal txheej yog kub, los yog kub zoo li tus , thiab columnar, lossis column- zoo li tus , thaum cov cell ntawm txheej txheej sab nrauv sib txawv hauv qhov tsos nyob ntawm qib kev nruj.
Kuj tseem paub yog, koj yuav txheeb xyuas qhov hloov pauv ntawm epithelium li cas?
Thaum xub thawj siab ib muag a transitional epithelium zoo li stratified cuboidal epithelium cov ntaub so ntswg . Ob peb kab ntawm cov nuclei zoo li tau topped los ntawm txheej txheej ntawm lub dome-puab cov cell uas ua rau lub lumen ntawm cov zis. Cov duab ntawm cov cell saum npoo thiab cov naj npawb ntawm kab hloov yog tias lub zais zis yog distended.
Zoo sib xws, dab tsi yog qhov hloov pauv epithelium? Transitional epithelium yog cov ntaub so ntswg stratified ua los ntawm ntau cov txheej txheem ntawm tes, qhov twg cov hlwb tsim cov ntaub so ntswg tuaj yeem hloov cov duab nyob ntawm qhov tsis txaus siab hauv lub cev. Qhov no epithelium cov ntaub so ntswg tau pom muaj kab mob hauv lub zais zis, ureters thiab urethra, nrog rau hauv cov ducts ntawm cov qog ua qog.
Yog li ntawd, dab tsi yog cov yam ntxwv ntawm transitional epithelium?
Ib qho tseem ceeb cov yam ntxwv ntawm kev hloov pauv epithelium yog nws lub peev xwm yuav ncab thiab rov qab tau daim ntawv qub. Piv txwv li, thaum lub sijhawm sau lossis tso zis ntawm lub zais zis. Nws tuaj yeem pom tias cov hlwb ntawm txheej sab sauv qee zaum flattened (stretched) thiab qee zaum sib npaug (so).
Cov hlwb epithelial hloov pauv yog dab tsi thiab lawv nyob qhov twg?
Nws yog me dua ib tug squamous epithelial hlwb thiab muaj centrally nyob nucleus. Transitional epithelial hlwb tuaj yeem tshwm sim hauv kheej kheej, polyhedral, thiab caudate (hauv qab duab) cov ntawv. Lawv tshwm sim los ntawm lub zais zis, ureters, thiab lub raum pelvis.
Pom zoo:
Yuav ua li cas yooj yim cuboidal epithelium nqus?
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