Lub plab hnyuv mucosa nyob qhov twg?
Lub plab hnyuv mucosa nyob qhov twg?

Video: Lub plab hnyuv mucosa nyob qhov twg?

Video: Lub plab hnyuv mucosa nyob qhov twg?
Video: Qhia Tshuaj 12 Lag Kho Plab Nyhuv 12 Yam Mob Zoo Heev 2024, Lub Xya hli ntuj
Anonim

Cov plab epithelium

Nws suav nrog txheej txheej ntawm cov hlwb epithelial hauv lub plab.

Hais txog qhov no, dab tsi yog plab hnyuv mucosa?

Cov mucosa yog txheej txheej sab hauv ntawm GI txoj kab phab ntsa; Nws yog lub luag haujlwm rau ob qho tib si tso kua txiv digestive thiab nqus cov as-ham. Qhov thib ob txheej yog submucosa, uas muaj ib tug tuab txheej ntawm connective cov ntaub so ntswg nrog cov hlab ntsha, lymphatic hlab ntsha, thiab hlab ntsha.

Dab tsi ntawm epithelium pom nyob rau hauv lub mucosa ntawm txoj hnyuv me? Cov mucosa ntawm txoj hnyuv me yog kab los ntawm kab ntawv yooj yim epithelium cov ntaub so ntswg uas muaj feem ntau ntawm cov hlwb nqus (enterocytes), nrog cov pob zeb tawg paj tawg thiab qee zaum nkag mus rau hauv cov hlwb enteroendocrine. Hauv crypts, cov epithelium cov ntaub so ntswg kuj suav nrog Paneth hlwb thiab qia hlwb.

Ib yam li ntawd ib tug yuav nug, yog dab tsi yog txoj haujlwm ntawm plab hnyuv barrier?

Cov plab epithelium yog ib txheej ntawm cov cell hauv ob sab phlu plab lumen thiab muaj ob qhov tseem ceeb kev ua haujlwm . Firstly, nws ua raws li ib tug thaiv txhawm rau tiv thaiv kev nkag mus ntawm cov teeb meem intraluminal suav nrog antigens txawv teb chaws, kab mob me me thiab lawv cov co toxins 1, 2.

Lub siab ncaj ncees yog dab tsi?

Lub plab microbiota cuam tshuam plab hnyuv integrity . Cov kws tshawb fawb tau tshuaj xyuas seb puas muaj kev hloov pauv ntawm plab kab mob muaj pes tsawg leeg cuam tshuam plab hnyuv integrity , i.e. lub peev xwm ntawm lub cev los tswj kom muaj kev tswj hwm kev ua haujlwm zoo uas cuam tshuam cov kab mob nkag mus rau hauv lub cev tsis txhob txwm ua.

Pom zoo: