Qhov sib txawv ntawm qhov yooj yim stratified thiab pseudostratified epithelial cov ntaub so ntswg yog tus naj npawb ntawm cov khaubncaws sab nraud povtseg thiab cov cell txuas rau hauv qab daus daim nyias nyias. Cov epithelium yooj yim muaj ib txheej ntawm cov hlwb txuas nrog rau hauv qab daus daim nyias nyias thaum stratified epithelium muaj ntau txheej txheej ntawm cov hlwb uas tsuas yog cov basal cell txheej txuas rau hauv qab daus membrane; pseudostratified epithelium, ntawm qhov tod tes, tsuas muaj ib txheej ntawm tes txuas rau hauv qab daus daim nyias nyias, tab sis nws zoo li stratified.
Epithelial cov ntaub so ntswg yog ib qho ntawm plaub hom ntaub so ntswg uas peb muaj. Nws yog ib qho tseem ceeb hauv kev npog lub cev, ua kom cov kab noj hniav hauv lub cev thiab tsim cov qog. Txawm hais tias cov ntaub so ntswg epithelial tsis muaj cov hlab ntsha, nws yog innervated nyob rau hauv qhov. Nws muaj cov txheej txheem ntawm tes nruj nreem txuas ua ke. Epithelium ua tiav ntau yam haujlwm hauv peb lub cev. Nws tiv thaiv peb lub cev los ntawm hluav taws xob, desiccation, co toxins, thiab lub cev raug mob. Nyob rau hauv lub digestive ib ntsuj av, epithelium pab txhawb cov as-ham. Tsis tas li ntawd, nws secretes hws, mucus, enzymes thiab lwm yam khoom ntawm ducts. Raws li tus naj npawb ntawm cov khaubncaws sab nraud povtseg, muaj peb hom epithelium li yooj yim, stratified thiab pseudostratified. Hauv tsab xov xwm no, cia peb saib qhov txawv ntawm qhov yooj yim stratified thiab pseudostratified epithelial ntaub so ntswg.
Cov ntaub so ntswg yooj yim yog dab tsi?
Cov ntaub so ntswg yooj yim muaj ib txheej ntawm cov hlwb so ntawm lub hauv paus membrane, uas yog lub network fibrous. Raws li cov duab ntawm cov hlwb hauv cov ntaub so ntswg yooj yim, muaj peb hom ntawm cov ntaub so ntswg yooj yim li cov ntaub so ntswg squamous epithelial, yooj yim cuboidal epithelial cov ntaub so ntswg thiab yooj yim columnar epithelial cov ntaub so ntswg.
Simple squamous epithelial cov ntaub so ntswg muaj ib lub xovtooj ntawm tes tsim los ntawm lub tiaj tus polygonal lossis hexagonal zoo li lub hlwb. Txhua lub xovtooj ntawm tes muaj qhov chaw nyob hauv nruab nrab ntawm lub kheej kheej kheej kheej thiab tsis xwm yeem ciam teb. Tsis tas li ntawd, cov ntaub so ntswg tuaj yeem pom nyob rau hauv ob sab ntawm lub plawv, alveoli, Bowman's capsule, visceral thiab peritoneal hauv ob sab phlu ntawm coelom. Kev tiv thaiv, pom, nqus thiab tso tawm yog lub luag haujlwm tseem ceeb ntawm cov ntaub so ntswg squamous.
Cov ntaub so ntswg yooj yim cuboidal epithelial muaj ib txheej ntawm cuboidal zoo li lub hlwb nrog tib qhov siab thiab dav. Tsis tas li ntawd, cov ntaub so ntswg tuaj yeem pom nyob rau hauv cov kab mob pancreatic, cov qog ua kua qaub, nrog rau lub raum tubule. Yooj yim cuboidal epithelial hlwb kuj tuaj yeem ua kab nrog microvilli, uas pab txhawb kev ua haujlwm ntawm kev nqus. Kev ua haujlwm dav dav ntawm cov ntaub so ntswg yooj yim cuboidal epithelial yog kev tiv thaiv, nqus, tso tawm thiab tso tawm.
Daim duab 01: Epithelial Tissue
Cov ntaub so ntswg yooj yim columnar epithelial muaj cov kab ke siab-zoo li lub hlwb nrog qhov siab thiab dav tsis sib npaug. Cov hlwb muaj elongated nuclei nyob ze ze nrog rau hauv qab daus daim nyias nyias. Ib qho yooj yim columnar epithelial cov ntaub so ntswg tseem muaj cov hlwb goblet los yog cov hlwb secretory uas pab ua kom zais ntau yam tshuaj thiab kua dej. Cov ntaub so ntswg tuaj yeem pom raws li hauv ob sab phlu ntawm lub plab, cov hnyuv me thiab loj, cov qog nqaij hlav, cov phab ntsa ntawm lub tsev menyuam thiab lub zais zis. Nws lub luag haujlwm tseem ceeb yog nqus, tso tawm thiab tso tawm.
Dab tsi yog Stratified Epithelial Tissue?
Cov ntaub so ntswg epithelial muaj ob lossis ntau txheej ntawm cov hlwb thiab yog cov ntaub so ntswg uas dav tshaj plaws hauv cov kab mob hauv nruab nrog cev thiab lub cev kab noj hniav. Muaj peb hom stratified epithelial cov ntaub so ntswg raws li cov duab ntawm cov hlwb. Lawv yog stratified squamous epithelial cov ntaub so ntswg, stratified cuboidal epithelial cov ntaub so ntswg thiab stratified columnar epithelial cov ntaub so ntswg.
Daim duab 02: Stratified Epithelial Tissue
Cov ntaub so ntswg squamous epithelial muaj cov hlwb uas zoo ib yam li cov ntaub so ntswg squamous epithelial yooj yim, tab sis lawv nyob hauv ntau txheej. Lawv tuaj yeem ua keratinized lossis nonkeratinized. Cov tawv nqaij txheej txheej muaj keratinized stratified squamous epithelial cov ntaub so ntswg. Nws muaj keratin protein uas muab kev tiv thaiv kev ua haujlwm. Non-keratinized stratified squamous epithelial cov ntaub so ntswg tuaj yeem pom nyob rau hauv qhov ncauj kab noj hniav, txoj hlab pas mus rau lub plab hlws ris, qhov quav, qhov quav, qhov chaw mos thiab lub ncauj tsev menyuam. Nyob rau hauv sib piv, stratified cuboidal epithelial cov ntaub so ntswg yog tam sim no nyob rau hauv lub ducts ntawm cov qog (hws qog, mammary qog) thaum lub stratified columnar epithelial cov ntaub so ntswg yog tam sim no nyob rau hauv cov kev hloov chaw (hluav taws xob) ntawm lwm yam epithelial hom.
Ntxiv rau cov no, cov kev hloov pauv ntawm cov epithelium kuj yog ib hom stratified epithelial cov ntaub so ntswg. Nws muaj cov hlwb ntawm cov duab sib txawv, thiab lawv tau ncab raws hauv qab daus daim nyias nyias. Nws qhov kev faib tawm yog nyob rau hauv ob sab ntawm lub ureters, urethra, thiab zais zis.
Pseudostratified Epithelial Tissue yog dab tsi?
Pseudostratified epithelial cov ntaub so ntswg muaj ib txheej cell. Tag nrho cov cell sib cuag nrog lub hauv paus membrane. Tab sis cov nuclei nyob hauv cov txheej txheem sib txawv hauv cov ntaub so ntswg pseudostratified epithelial. Cov hlwb ntawm pseudostratified epithelial cov ntaub so ntswg sib txawv hauv qhov siab. Thaum saib cov ntaub so ntswg epithelial, nws zoo nkaus li muaj ntau txheej txheej ntawm tes vim tias cov hlwb muaj qhov siab sib txawv. Tsuas yog cov hlwb siab tshaj plaws ncav cuag qhov chaw, tab sis txhua lub hlwb nyob rau hauv qab daus daim nyias nyias. Vim qhov kev xav tsis zoo no, cov ntaub so ntswg epithelial yog hu ua pseudostratified.
Daim duab 03: Pseudostratified Epithelial Tissue
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 cov plua plav thiab cov kab mob sib kis. Nws kuj tseem muab kev tiv thaiv rau cov ntaub so ntswg.
Dab tsi yog qhov zoo sib xws ntawm Yooj Yim Stratified thiab Pseudostratified Epithelial Tissue?
- Lawv yog hom kab mob epithelial uas tsim cov kab mob hauv nruab nrog cev thiab tiv thaiv kab mob.
- Lawv muaj ib daim pam hauv qab uas cov hlwb nyob.
Dab tsi yog qhov sib txawv ntawm Yooj Yim Stratified thiab Pseudostratified Epithelial Tissue?
Qhov sib txawv ntawm qhov yooj yim stratified thiab pseudostratified epithelial cov ntaub so ntswg yog tias cov ntaub so ntswg yooj yim tsuas muaj ib txheej ntawm tes thaum cov ntaub so ntswg stratified muaj ntau txheej cell thiab pseudostratified epithelial cov ntaub so ntswg zoo li muaj ob peb txheej ntawm tes txawm tias tsuas muaj ib txheej ntawm tes.
Cov hauv qab no qhia txog qhov sib txawv ntawm qhov yooj yim stratified thiab pseudostratified epithelial cov ntaub so ntswg.
Summary – Yooj Yim Stratified vs Pseudostratified Epithelial Tissue
Epithelial cov ntaub so ntswg yog ib hom ntaub so ntswg uas tsim cov txheej txheem ntawm lub cev thiab tsim cov kab noj hniav ntawm lub cev. Cov ntaub so ntswg epithelial yooj yim tsuas muaj ib txheej ntawm cov hlwb xwb, hos cov ntaub so ntswg stratified epithelial muaj ob los yog ntau lub cell txheej stacked rau ib leeg. Pseudostratified epithelium, ntawm qhov tod tes, zoo li ntau txheej cell. Tab sis, tag nrho cov hlwb hauv pseudostratified epithelium txuas nrog rau hauv qab daus daim nyias nyias. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm qhov yooj yim stratified thiab pseudostratified epithelial cov ntaub so ntswg.
