2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov osteoclasts yog ntau lub nucleated hlwb uas muaj ntau mitochondria thiab lysosomes. Cov no yog cov hlwb ua lub luag haujlwm rau resorption ntawm pob txha. Osteoclasts feem ntau muaj nyob rau txheej txheej ntawm cov pob txha, tsuas yog hauv qab lub periosteum.
pob txha reabsorbing hlwb hu ua dab tsi?
Osteoblasts thiab Osteocytes: cov no yog cov pob txha tsim cov hlwb. Osteoclasts: cov no yog cov pob txha resorbing hlwb.
Yuav ua li cas yog cov pob txha?
pob txha muaj plaub hom cell sib txawv; osteoblasts, osteocytes, osteoclasts thiab pob txha hauv cov hlwb. Osteoblasts, pob txha hauv cov hlwb thiab osteoclasts muaj nyob rau ntawm pob txha pob txha thiab tau muab los ntawm cov hlwb mesenchymal hauv zos hu ua progenitor cells.
Yuav ua li cas hauv qab no yog pob txha reabsorbing cell lov pob txha)?
Osteoblasts yog cov pob txha tsim cov hlwb, osteocytes yog cov pob txha paub tab thiabosteoclaststawg thiab rov nqus cov pob txha. Muaj ob hom ossification: intramembranous thiab endochondral.
Yuav ua li cas hauv qab no yog pob txha rhuav tshem cov pob txha?
Osteoclasts tso tawm cov enzyme uas rhuav tshem cov pob txha thaum pom tias tsim nyog. Cov hlwb no yog ib feem tseem ceeb ntawm cov pob txha loj hlob thiab kho pob txha. Nws kuj tseem pab txhim kho cov pob txha thaum nws puas. Monocytes, ib hom qe ntshav dawb, ua ke los tsim osteoclasts.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Dab tsi ua kom pob txha pob txha ntawm cov pob qij txha?
pob txha muab cov duab, txhawb nqa, thiab qauv rau lwm cov ntaub so ntswg hauv lub cev. Nws kuj yuav pab tau cov pob qij txha. Pob txha mos kuj smoothens cov pob txha nto ntawm cov pob qij txha. Cov ntaub so ntswg dab tsi npog cov pob txha ntawm cov pob qij txha?
Dab tsi qhov sib txawv ntawm cov pob txha pob txha thiab pob txha?
Cov pob txha pob txha yog tsim los ntawm osteons thiab tsim cov txheej txheem sab nraud ntawm txhua pob txha. Cov pob txha pob txha yog tsim los ntawm trabeculae thiab ua rau sab hauv ntawm txhua pob txha. Dab tsi yog qhov sib txawv ntawm cov pob txha pob txha thiab pob txha pob txha?
Puas yog lub pob txha pob txha pob txha pob txha?
CONCLUSIONS: vertebral endplate raug mob feem ntau pom hauv osteoporotic vertebral compression fractures. Dab tsi ua rau lub pob txha tawg? Nws yog kev xav tias, nyob rau hauv ntau qhov mob ntawm qhov mob qis qis, thawj qhov ua rau mob yog pob txha ntawm pob txha caj qaum los ntawm compression rog.
Vim li cas pob txha pob txha txawv ntawm cov pob txha li niaj zaus?
Thaum osteoporosis tshwm sim, lub qhov thiab qhov chaw hauv lub honeycomb loj dua li cov pob txha noj qab haus huv. Cov pob txha osteoporotic muaj poob ntom lossis loj thiab muaj cov ntaub so ntswg txawv txav. Raws li cov pob txha tsis tshua muaj zog, lawv tsis muaj zog thiab feem ntau yuav tawg.
