Video: Dab tsi yog stratified epithelia?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A stratified epithelium muaj ob peb txheej txheej ntawm cov cell. Qhov no epithelium cov ntaub so ntswg tiv thaiv lub cev thiab tshuaj hnav thiab kua muag. Cov stratified epithelium yog lub npe los ntawm cov duab ntawm txheej apical feem ntau ntawm cov cell, ze rau qhov chaw pub dawb.
Tom qab ntawd, qhov pom stratified epithelium nyob qhov twg?
Stratified epithelium
| Qhov chaw | Lub cev sab hauv kab noj hniav thiab hlab Parenchyma ntawm cov qog |
|---|---|
| Hom | Squamous - nonkeratinized (npog cov mucosa) - keratinized (tawv nqaij) Cuboidal (kab cov kab mob tso tawm ntawm cov qog) Columnar (sib txuas ntawm daim tawv muag) Hloov pauv (tso zis) |
Ib yam nkaus, plaub hom stratified epithelia yog dab tsi? Plaub hom yog: Squamous epithelia muaj flattened cells nyob rau sab saum toj txheej sab nrauv thiab ob peb txheej ntawm cov duab tsis xwm yeem hauv qab. Cov hlwb no tau pom nyob hauv cov chaw uas raug rau lub cev kev nyuaj siab. Cuboidal epithelia muaj lub ntsej muag lub ntsej muag lub ntsej muag nyob hauv txheej txheej thiab feem ntau pom muaj hauv cov qog.
Tsis tas li, dab tsi yog kev ua haujlwm ntawm stratified epithelium?
Stratified ua squamous epithelium cov ntaub so ntswg yog hom ntaub so ntswg pom npog thiab sab hauv ib feem ntawm lub cev. Hauv daim ntaub no, hlwb yog flattened, koom nruj nreem ua ke, thiab stacked. Qhov loj muaj nuj nqi ntawm cov ntaub so ntswg no yog kev tiv thaiv, zoo li nws yog pom hauv cov cheeb tsam uas tau hnav thiab tsim kua muag.
Koj yuav txheeb xyuas cov stratified squamous epithelium li cas?
Stratified squamous epithelia suav nrog ntau txheej txheej ntawm cov cell nrog txheej sab nrauv feem ntau ua squamous . Lwm cov txheej yuav muaj cov cell uas yog cuboidal thiab/lossis kab ntawv , tab sis kev faib tawm ntawm epithelium cov ntaub so ntswg tsuas yog ua raws cov duab ntawm txheej txheej sab nraud ntawm cov cell.
Pom zoo:
Dab tsi yog glycoprotein dab tsi yog ib qho ntawm kev siv glycoproteins?
Glycoproteins yog cov protein uas muaj cov oligosaccharide saw (glycans) covalently txuas nrog cov amino acid sab-saw. Glycoproteins kuj tseem yog ib qho tseem ceeb ua ke ntawm cov protein, uas lawv ua lub luag haujlwm hauv kev sib cuam tshuam ntawm tes -cell
Qhov txawv ntawm Keratinized thiab Nonkeratinized stratified squamous epithelium yog dab tsi?
Cov tawv nqaij (epidermis) yog keratinized, feem ntau hnyav li ntawm ib leeg thiab xib teg. Hauv daim duab no, txheej txiv kab ntxwv (hu ua stratum corneum) yog txheej keratinized. Nonkeratinized swb se epithelium muaj cov hlwb nyob txhua txoj hauv kev mus rau qhov dawb, tsis muaj cov kab mob tuag no
Dab tsi yog stratified squamous epithelial cov ntaub so ntswg?
Stratified squamous epithelia yog cov ntaub so ntswg tsim los ntawm ntau cov txheej txheem ntawm cov cell so ntawm lub hauv paus membrane, nrog rau sab saum toj txheej uas muaj squamous hlwb. Cov txheej txheej hauv qab ntawm lub xov tooj tuaj yeem ua los ntawm cov cuboidal lossis columnar cells ib yam
Dab tsi yog stratified squamous keratinized epithelium?
(Cov tawv nqaij Palmar) Cov cell nyob saum npoo ntawm cov kab ke sib xyaw ua ke keratinized epithelium yog tiaj heev. Tsis tsuas yog lawv tiaj tus, tab sis lawv tsis muaj txoj sia nyob lawm. Lawv tsis muaj nucleus lossis organelles. Lawv tau ntim nrog cov protein hu ua keratin, uas ua rau peb cov tawv nqaij tsis muaj dej
Lub luag haujlwm ntawm stratified columnar epithelium yog dab tsi?
Stratified columnar epithelia tau pom hauv qhov muag sib txuas ntawm lub qhov muag, hauv ib feem ntawm lub pharynx, qhov quav, lub tsev menyuam, thiab txiv neej cov zis thiab vas deferens. Nws kuj tseem muaj nyob hauv cov lobar ducts hauv cov qog ua kua qaub. Cov hlwb ua haujlwm hauv kev zais thiab tiv thaiv