Qhov sib txawv tseem ceeb ntawm pseudostratified thiab transitional epithelium yog tias pseudostratified epithelium tsuas muaj ib txheej ntawm tes txuas rau hauv qab daus daim nyias nyias thaum lub sijhawm hloov pauv epithelium muaj ntau txheej txheej ntawm cov hlwb sib txawv.
Epithelial cov ntaub so ntswg yog ib qho ntawm plaub hom ntaub so ntswg uas muab thawj kab kev tiv thaiv rau peb lub cev. Nws yog ib daim ntawv ntawm cov hlwb uas npog lub ntsej muag ntawm lub cev thiab kab sab nraud ntawm lub cev thiab lub cev kab noj hniav. Cov ntaub so ntswg epithelial yog avascular thiab absorbs cov as-ham ntawm diffusion los ntawm lub hauv paus membrane. Cov ntaub so ntswg epithelial tau muab faib ua ntau pawg raws li cov duab ntawm cov hlwb thiab cov txheej txheem ntawm tes. Pseudostratified epithelium thiab transitional epithelium yog ob yam zoo li no. Pseudostratified epithelium muaj ib txheej ntawm tes nyob rau hauv uas lub hlwb yog irregularly zoo li tus, muab cov tsos ntawm ntau tshaj ib txheej. Transitional epithelium yog ib qho tshwj xeeb stratified epithelium uas cov duab ntawm cov hlwb tuaj yeem sib txawv.
YPseudostratified Epithelium yog dab tsi?
Pseudostratified epithelium zoo nkaus li ib qho stratified epithelium, tab sis nws muaj ib txheej ntawm tes uas txhua lub hlwb hu rau hauv qab daus daim nyias nyias. Nuclei ntawm lub cell yog nyob rau hauv ntau txheej hauv pseudostratified epithelium. Ntxiv mus, cov hlwb sib txawv hauv qhov siab.
Daim duab 01: Pseudostratified Epithelium
Nyob rau hauv lub tshuab tsom, pseudostratified epithelium tshwm sim raws li ib tug stratified epithelium uas muaj li ntawm ob peb cell txheej raws li cov hlwb ntawm txawv heights. Tsuas yog cov hlwb siab tshaj plaws mus txog qhov chaw. Txawm li cas los xij, txhua lub cell so ntawm lub hauv paus membrane. Vim qhov kev xav tsis zoo no, cov ntaub so ntswg epithelial yog hu ua pseudostratified. Feem ntau cov hlwb muaj cilia, thiab lawv tuaj yeem pom nyob hauv trachea, bronchi thiab lwm yam ua pa. Lub luag haujlwm tseem ceeb ntawm pseudostratified epithelium yog txhawm rau txhawm rau plua plav thiab kis kab mob. Nws kuj tseem muab kev tiv thaiv rau cov ntaub so ntswg.
Dab tsi yog Transitional Epithelium?
Kev hloov pauv ntawm epithelium yog ib qho tshwj xeeb stratified epithelium uas muaj ntau txheej txheej ntawm tes (txog rau txheej). Cov duab ntawm cov hlwb sib txawv. Transitional epithelium pom tsuas yog nyob rau hauv cov zis, tshwj xeeb tshaj yog nyob rau hauv lub zais zis, urethra thiab uterus. Cells nyob rau hauv transitional epithelium tuaj yeem nthuav thiab cog lus. Ntxiv mus, lawv tuaj yeem raug hloov pauv ntawm lawv cov duab thiab cov qauv.
Daim duab 02: Kev hloov pauv Epithelium
Thaum lub zais zis khoob, lub epithelium yog convoluted thiab muaj cuboidal apical hlwb nrog convex, kaus zoo li tus, apical nto. Nws zoo nkaus li thicker thiab ntau multilayered. Thaum lub zais zis tso zis, epithelium poob nws cov convolutions thiab apical hlwb hloov ntawm cuboidal mus rau squamous. Nws zoo nkaus li stretched thiab tsawg stratified. Kev hloov pauv ntawm epithelium nyob rau hauv cov zis muaj peev xwm ncav cuag thiab cog lus kom haum raws li qhov hloov pauv ntawm cov zis.
Dab tsi yog qhov zoo sib xws ntawm Pseudostratified thiab Transitional Epithelium?
- Pseudostratified thiab transitional epithelia yog ob hom epithelial ntaub so ntswg.
- Ob lub epithelia tseem ceeb heev rau peb.
Qhov txawv ntawm Pseudostratified thiab Transitional Epithelium yog dab tsi?
Pseudostratified epithelium yog hom epithelium uas muaj ib txheej ntawm cov hlwb ntawm ntau qhov siab. Nyob rau hauv sib piv, transitional epithelium yog ib hom stratified epithelium tsim los ntawm ntau txheej ntawm cov hlwb uas muaj peev xwm ntawm kev cog lus thiab nthuav. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pseudostratified thiab transitional epithelium. Tsis tas li ntawd, pseudostratified epithelium pom muaj nyob rau hauv cov hlab ntsws, thaum lub sij hawm hloov pauv epithelium tsuas yog pom nyob rau hauv cov zis.
Ntxiv mus, pseudostratified epithelium ntxiab plua plav thiab lwm yam khoom txawv teb chaws, thaum lub sijhawm hloov pauv ntawm cov epithelium tso cai rau cov kab mob urinary nthuav dav thiab ncab. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pseudostratified thiab transitional epithelium. Lwm qhov sib txawv ntawm pseudostratified thiab transitional epithelium yog tias tag nrho cov hlwb ntawm pseudostratified epithelium kov lub basal daim nyias nyias thaum tsuas yog cov cell qis tshaj ntawm cov txheej txheem hloov pauv ntawm epithelium kov lub basal membrane.
Cov ntawv qhia hauv qab no qhia txog qhov sib txawv ntawm pseudostratified thiab transitional epithelium.
Summary – Pseudostratified vs Transitional Epithelium
Qhov sib txawv tseem ceeb ntawm pseudostratified thiab transitional epithelium yog tias pseudostratified epithelium tsuas muaj ib txheej ntawm tes thaum lub sijhawm hloov pauv epithelium muaj ntau txheej. Ntxiv mus, cov hlwb ntawm cov hlwb pseudostratified nyob rau hauv ntau qhov siab, thiab lawv cov nuclei nyob ntawm ntau theem. Cells ntawm transitional epithelium muaj ntau yam duab thiab qauv. Qhov tseem ceeb tshaj, cov hlwb tuaj yeem cog lus thiab nthuav dav. Tsis tas li ntawd, pseudostratified epithelium pom nyob rau hauv cov hlab ntsws, thaum lub sij hawm hloov pauv epithelium pom nyob rau hauv cov zis.
