Epithilium vs Endothelium | YEndothelium vs Epithilium Tissues
Ib cov ntaub so ntswg yog ib pab pawg ntawm lub cev sib txuas nrog cov khoom sib txuas ntawm tes, uas yog tshwj xeeb hauv kev ua haujlwm lossis kev ua haujlwm. Cov tsiaj lub cev yog tsim los ntawm plaub hom ntaub so ntswg ntawm lub hauv paus ntawm lawv cov qauv thiab kev ua haujlwm. Cov no yog cov ntaub so ntswg epithelial, cov ntaub so ntswg txuas, cov nqaij mos thiab cov hlab ntsha. Cov ntaub so ntswg epithelial yog npog tag nrho cov sab nraud thiab sab hauv lub cev. Nws kab tag nrho sab nraud ntawm daim tawv nqaij, cov kab noj hniav sab hauv thiab lumens nrog rau sab nraud thiab sab hauv ntawm cov hlab ntsha. Lawv kuj pab txoj haujlwm exocrine los ntawm kev tsim cov qog. Lub epithelium sab nraud yog hu ua exothelium, nws yog lub epithelium uas npog daim tawv nqaij thiab lub cev hauv ob sab phlu. Kuj tseem muaj ob hom kab mob ntawm epithelium: mesoderm uas kab hauv kab noj hniav thiab lumens thiab mesothelium uas npog cov hlab ntsha thiab lub plawv chamber. Li no, qhov tseem ceeb ntawm endothelium yog ib feem ntawm cov ntaub so ntswg epithiliual uas pab lub cev tiv thaiv nws tus kheej los ntawm kev puas tsuaj.
endothelium
Lub endothelium yog ib hom tshwj xeeb ntawm epithilium pom nyob rau hauv cov hlab ntsha ntawm cov ntshav thiab lymphatic hlab ntsha. Nws kuj ua rau lub plawv kab noj hniav. Cov ntaub so ntswg no muaj keeb kwm embryonic mesodermal. Nws feem ntau pab ua kom cov kua dej ntws zoo rau ntawm nws qhov chaw. Nws yog tsim los ntawm flattened hlwb adhered rau ib tug basal membrane nrog elastin fibers khiav los ntawm nws. Qhov no muab cov endothelium ib qho zoo distensible thiab muaj peev xwm ua kom haum rau cov kua dej hloov pauv. Cov hlwb endothelial tsim ib daim ntawv zoo li thaiv kev nkag mus ntawm cov khoom siv sab nraud, cov kab mob thiab cov co toxins, nrog rau cov kua dej ntws hauv thiab tawm ntawm cov hlab ntsha. Lawv rhiab heev rau cov ntshav siab thiab tso cov vasodilators xws li prostacylin thiab Nitric oxide teb rau cov ntshav siab. Thaum muaj kev puas tsuaj rau cov hlab ntsha, endothelium secrets thromboplastin; Qhov no pab cov ntshav coagulation thiab teb rau cytokinase kom nce permeability rau cov qe ntshav dawb.
Epithilium
Lub epithelium yog tsim los ntawm cov hlwb uas nyob sib ze thiab muab tso rau hauv ib lossis ntau txheej. Cov ntaub so ntswg tiag tiag muaj lub hauv paus ectodermal thiab endodermal embryonic keeb kwm. Cov ntaub so ntswg no yog avascular li no cov ntaub so ntswg sib txuas muab nws nrog cov khoom noj khoom haus thiab lub zog los ntawm kev yooj yim diffusion. Rau qhov ntawd, basal daim nyias nyias yog perforated los ntawm cov ntshav thiab cov hlab ntsha thiab cov hlab ntsha xaus rau kev nkag siab. Cov no muab cov dej num ntawm kev tiv thaiv los ntawm txhua yam physiological thiab microbial puas, secretary functions ntawm enzymes, cov tshuaj hormones thiab lubricating kua los ntawm glandular epithelium thiab sensory muaj nuj nqi los ntawm cov hlab ntsha xaus.
Qhov txawv ntawm cov ntaub so ntswg epithilium thiab endothelium yog dab tsi?
Hauv kev sib piv ob hom ntaub so ntswg, epithelium thiab endothelium, nws tuaj yeem hais tau tias lawv cov haujlwm tseem ceeb zoo ib yam li hauv tus tuav ntaub ntawv, kev tiv thaiv thiab kev hnov lus. Txawm li cas los xij, lawv muaj qhov sib txawv embryonic keeb kwm nrog epithelium muaj ectodermal thiab endodermal keeb kwm thiab endothelium muaj mesodermal keeb kwm. Lub basal membrane ntawm lub epithelium muaj keratin fibers txuam nrog, thiab endothelium muaj elastin fiber cuam tshuam basal membrane. Lawv ob leeg muaj lub siab generative thiab kho muaj peev xwm. Tsis tas li ntawd, endothelium secretes cov tshuaj koom nrog hauv cov ntshav coagulation thiab cov ntshav dawb stimulation, uas tsis ua haujlwm ntawm cov ntaub so ntswg epithelial. Txawm li cas los xij, lawv tso cov enzymes, cov tshuaj hormones thiab lubricating kua thiab pab ntxuav qhov chaw los ntawm kev ua ntawm microvilli uas tsis muaj nyob rau hauv cov ntaub so ntswg endothelial. Nyob rau hauv cov ntaub so ntswg epithelial, cov yam tseem ceeb yog secreted los ntawm cov qog los yog mucosa secreting hlwb. Tab sis cov hlwb sqauomose flattened lawv tus kheej ua qhov tso tawm hauv cov ntaub so ntswg endothelial. Lub endothelium yog tsim los ntawm ib txheej cell nyob, hos lub epithelium tej zaum yuav muaj ntau txheej cell, uas yuav ciaj sia los yog tuag. Li no, qhov tseem ceeb ntawm endothelium thiab cov epithelium yog cov ntaub so ntswg nrog tib lub luag haujlwm, txhua qhov hloov kho kom haum rau nws ib puag ncig thiab kev ua haujlwm.
