![Lub stem cell niche rau cov qe ntshav nyob qhov twg? Lub stem cell niche rau cov qe ntshav nyob qhov twg?](https://i.answers-medical.com/preview/medical-health/13971850-where-is-the-stem-cell-niche-for-blood-cells-j.webp)
Video: Lub stem cell niche rau cov qe ntshav nyob qhov twg?
![Video: Lub stem cell niche rau cov qe ntshav nyob qhov twg? Video: Lub stem cell niche rau cov qe ntshav nyob qhov twg?](https://i.ytimg.com/vi/OuvLuFSaaww/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Lub hematopoietic qia cell (HSC) qhov chaw yog qhov chaw ntawm lub cev uas HSCs nyob thiab rov tsim kho tus kheej. HSCs sab nraum qhov chaw tsis txhob rov ua tus kheej thiab pib txheej txheem sib txawv kom thaum kawg tsim kom muaj kev paub tab cov qe ntshav.
Tsuas yog li ntawd, lub stem cell niche tswj qia cell txawv li cas?
Lawv muab cov teeb liab uas khaws cov qia hlwb los ntawm sib txawv mus txog thaum lawv raug hu mus ua haujlwm.
Tom qab, lo lus nug yog, dab tsi yog pob txha pob txha niche? Niches yog cov ntaub so ntswg hauv zos microenvironments uas tswj thiab tswj cov qia hlwb. Cov qhov chaw yog perivascular, tsim ib feem los ntawm mesenchymal stromal hlwb thiab endothelial hlwb thiab feem ntau, tab sis tsis tas li, nyob ze trabecular. pob txha.
Ib tus kuj tseem yuav nug tau, dab tsi yog hematopoietic qia cell?
Ib tug tsis paub qab hau ntawm tes uas tuaj yeem loj hlob mus rau txhua hom ntshav hlwb , suav nrog cov ntshav dawb hlwb , ntshav liab hlwb , thiab platelets. Hematopoietic qia hlwb muaj nyob rau hauv cov ntshav peripheral thiab cov pob txha pob txha. Kuj tseem hu ua ntshav qia cell.
Puas yog osteoblast yog stem cell?
Cheebtsam uas yog qhov tseem ceeb rau osteoblast pob txha tsim muaj xws li mesenchymal qia hlwb ( osteoblast precursor) thiab cov hlab ntsha uas muab cov pa oxygen thiab cov as-ham rau kev tsim cov pob txha.
Pom zoo:
Ob yam dab tsi tuaj yeem tshwm sim rau cov qia cell tom qab nws raug tshem tawm ntawm nws lub niche?
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Feem ntau, thaum lub qia cell faib, ib tus ntxhais cell sib txawv thiab tawm hauv lub niche, thaum lwm tus tseem nyob tom qab kom rov ua dua lub niche. Thaum lub qia cell poob, tus ntxhais ntawm cov qia nyob ze uas yuav muaj qhov sib txawv, hloov pauv mus rau hauv qhov chaw uas tsis muaj chaw thiab dhau los ua qia cell tshiab
Lub qhov hluav taws xob nyob qhov twg nyob qhov twg?
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Lub plab feem ntau yog nyob rau sab laug sab saud sab hauv qab lub diaphragm thiab txuas nrog zoo dua rau txoj hlab pas thiab nyob deb rau duodenum
Qhov ER ntxhib nyob rau hauv ib lub cell nyob qhov twg?
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Rough ER tau pom thoob plaws hauv lub xovtooj tab sis qhov ntom tau siab dua nyob ze cov tub ntxhais thiab cov cuab yeej Golgi. Ribosomes ntawm qhov ntxhib endoplasmic reticulum hu ua 'membrane bound' thiab yog lub luag haujlwm rau kev sib dhos ntawm ntau cov protein
Qhov twg feem ntau digestion nyob rau hauv cov hnyuv nyob qhov twg?
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Jejunum yog ib nrab ntawm txoj hnyuv me, nruab nrab ntawm duodenum thiab ileum. Feem ntau digestion thiab assorption nyob rau hauv lub jejunum
Qhov chaw nyob raug nyob qhov twg txhawm rau muab cov ntaub qhwv AED rau tus menyuam?
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Yog nws zoo li cov pawm yuav kov, muab ib lub ncoo tso rau hauv nruab nrab ntawm tus menyuam lub hauv siab. Muab lwm lub ncoo tso rau hauv nruab nrab ntawm tus menyuam lub nraub qaum. Tej zaum koj yuav tau ua ntej kom tus menyuam rov qab qhuav. Tsis txhob kov tus menyuam thaum lub AED kuaj tus menyuam lub plawv dhia