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Video: Dab tsi yog cov yam ntxwv ntawm cov ntaub so ntswg epithelial?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Txawm tias muaj ntau yam sib txawv cov ntaub so ntswg epithelial tag nrho cov ntaub so ntswg epithelial muaj tsuas yog tsib yam ntxwv Cov no yog cellularity, polarity, txuas, vascularity, thiab rov tsim dua tshiab. Cellularity raws li lub npe qhia txhais tau tias tus epithelium cov ntaub so ntswg yog tsim los ntawm yuav luag tag nrho cov hlwb.
Yog li ntawd, dab tsi yog cov yam ntxwv tseem ceeb ntawm cov ntaub so ntswg epithelial?
Cov ntaub so ntswg epithelial muaj tsib yam ntxwv tseem ceeb
- Polarity - tag nrho cov epithelia muaj ib tug apical nto thiab ib tug qis txuas basal nto uas txawv nyob rau hauv cov qauv thiab kev ua hauj lwm.
- Cov kev sib cuag tshwj xeeb - cov kab mob epithelial haum nyob ze ua ke thiab tsim cov nplooj ntawv txuas ntxiv (tshwj tsis yog hauv cov kab mob glandular epithelia).
Ib tug kuj yuav nug, dab tsi yog 3 yam ntxwv ntawm cov ntaub so ntswg epithelial? Cov Cwj Pwm ntawm Epithelial Tissues
- Npog thiab kab ntawm lub cev.
- Cells yog densely packed ua ke nrog tsawg npaum li cas ntawm intercellular tshuaj.
- Cells ruaj khov txuas los ntawm intercellular junctions.
- Cov cell so ntawm cov hauv qab daus membrane ib nrab tau los ntawm cov ntaub so ntswg sib txuas.
Ib sab saum toj no, dab tsi yog 4 yam ntxwv ntawm cov ntaub so ntswg epithelial?
Cov Cwj Pwm ntawm Epithelial Tissue. Tib neeg lub cev muaj plaub hom ntaub so ntswg: epithelial, txuas, leeg, thiab tshee. Cov ntaub so ntswg epithelial npog lub cev , kab tag nrho cov kab noj hniav, thiab tsim cov qog.
Dab tsi yog rau yam ntxwv ntawm cov ntaub so ntswg epithelial?
Nco ntsoov cov yam ntxwv tshwj xeeb ntawm qhov chaw ntawm lub epithelial: cilia, microvilli, cell junctions, thiab basal lamina. hauv qab daus membrane; cov nyob rau ntawm apical nto ciam teb ib qho chaw qhib. Cell puab yog piav raws li squamous, cuboidal, los yog columnar, xa mus rau cov tsos ntawm lub hlwb hauv ntu (Daim duab 4.2b).
Pom zoo:
Cov yam ntxwv dav dav ntawm cov ntaub so ntswg sib txuas yog dab tsi?
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Peb yam ntxwv ntawm cov ntaub so ntswg sib txuas yog dab tsi?
Peb yam ntxwv ntawm cov ntaub so ntswg sib txuas yog tias lawv tau vascularized heev, lawv rov zoo los ntawm kev puas tsuaj thiab lawv muaj ntau cov khoom siv tsis yog ntawm tes. Piv txwv ntawm cov ntaub so ntswg tshwj xeeb suav nrog ntshav, pob txha, pob txha mos thiab cov nqaij mos lymphoid
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Cov ntaub so ntswg sib txuas tsis sib thooj muaj cov fibers uas tsis tau sib dhos ua ke zoo ib yam li cov ntaub so ntswg sib txuas ib ntus. Cov ntaub so ntswg sib txuas tsis sib thooj muaj feem ntau ntawm cov fibers collagen. Nws muaj cov khoom hauv av tsawg dua li cov ntaub so ntswg sib txuas
Dab tsi ntawm cov ntaub so ntswg epithelial yog lub epidermis ntawm daim tawv nqaij?
Stratified squamous epithelium
Cov yam ntxwv ntawm cov ntaub so ntswg sib txuas yog dab tsi?
Cov ntaub so ntswg sib txuas ua ke muaj zog, ua cov hlua zoo li cov leeg thiab cov leeg. Tendons txuas skeletal leeg rau cov pob txha; ligaments txuas cov pob txha rau cov pob txha ntawm cov pob qij txha. Ligaments muaj qhov ncab ntau dua thiab muaj cov ywj ywj ntau dua li cov leeg