Qhov sib txawv tseem ceeb ntawm osteoblasts thiab osteocytes yog tias osteoblasts yog hom pob txha lub luag haujlwm rau kev tsim cov pob txha tshiab thaum osteocytes yog ib hom pob txha hlwb uas tswj cov pob txha loj.
Pob txha yog cov nqaij nyob thiab loj hlob uas ua rau cov pob txha ntawm tib neeg thiab lwm cov vertebrates. Nws muaj ntau hom cell xws li osteoblasts, osteocytes, osteoclasts, thiab cov pob txha hauv ob sab phlu. Cov hlwb no ua haujlwm sib txawv hauv cov pob txha. Osteocytes yog lub luag haujlwm tswj cov pob txha loj thaum osteoblasts yog lub luag haujlwm rau kev tsim cov pob txha tshiab. Ntawm qhov tod tes, osteoclasts yog lub luag haujlwm rau resorption ntawm pob txha. Tag nrho peb cov txheej txheem no - tsim, sustenance, thiab resorption - tshwm sim tsis tu ncua hauv cov pob txha cov ntaub so ntswg txhawm rau tiv thaiv cov txheej txheem kev ncaj ncees ntawm cov pob txha thiab sib npaug ntawm cov calcium thiab phosphorus hauv lub cev.
Osteoblasts yog dab tsi?
Osteoblasts yog ib hom pob txha hlwb. Lawv yog cov pob txha tsim cov hlwb uas ua rau cov pob txha deposition. Lawv zais cov organic matrix uas yog nplua nuj hauv collagen protein. Collagen protein yog cov pob txha tsim cov protein. Ntxiv mus, osteoblasts tseem ceeb hauv kev tswj cov calcium thiab phosphorus qib hauv lub cev. Osteoblasts kuj muaj lub luag haujlwm hauv kev tswj cov pob txha resorption.
Daim duab 01: Pob txha pob txha
Osteoblasts pib los ntawm mesenchymal qia hlwb. Feem ntau, osteoblasts yog cov hlwb tsis paub tab, tab sis cov hlwb sib txawv. Tsis tas li ntawd, osteoblasts hlwb muaj nyob rau saum npoo ntawm cov pob txha tshiab. Lawv tsuas muaj ib lub nucleus xwb. Osteoblasts ces dhau los ua neeg laus thiab hloov mus rau hauv osteocytes, uas yog qhov tseem ceeb rau kev tswj cov pob txha matrix.
Osteocytes yog dab tsi?
Osteocytes yog ib hom pob txha hlwb uas muaj nyob rau hauv cov pob txha laus. Lawv yog cov hnub qub-zoo li lub hlwb nrog kev ua haujlwm. Qhov loj ntawm lub cev ntawm lub cev ntawm osteocyte yuav txawv ntawm 5-20 micrometers inch. Ib tug laus osteocyte muaj ib tug nucleus. Muaj txog 42 billion osteocytes nyob rau hauv tib neeg lub cev. Cov hlwb no muaj qhov nruab nrab ib nrab-lub neej ntawm 25 xyoo. Cov osteocytes nyob hauv qhov chaw hu ua lacunae. Tsis tas li ntawd, osteocytes pib los ntawm osteoblasts. Thaum osteoblasts nkag mus rau hauv cov matrix uas lawv zais lawv tus kheej, lawv loj hlob thiab loj hlob mus rau hauv osteocytes. Tsis tas li ntawd, osteocytes tau sib cuam tshuam thiab sib koom ua ke los ntawm kev sib txuas ntev cytoplasmic.
Daim duab 02: Osteocytes
Osteocytes muaj peev xwm ua tiav cov khoom sib xyaw molecular, hloov kho, kev sib kis nyob deb. Yog li, lawv cov dej num zoo ib yam li lub paj hlwb. Cov laus osteocytes ua tiav feem ntau ntawm cov haujlwm tseem ceeb hauv cov pob txha ua haujlwm. Tsis tas li ntawd, osteocytes raug suav hais tias yog tus tswj hwm ntawm cov pob txha loj thiab tus tswj hwm endocrine hauv phosphate metabolism. Muaj ntau yam cuam tshuam rau kev tuag ntawm osteocytes. Lawv yog necrosis, senescence, apoptosis lossis engulfment ntawm osteoclasts. Tsis tas li ntawd, kev puas tsuaj osteocyte yuav ua rau muaj kab mob hu ua osteoporosis.
Dab tsi yog qhov zoo sib xws ntawm Osteoblasts thiab Osteocytes?
- Osteocytes thiab osteoblasts yog ob hom pob txha hlwb.
- Lawv yog hlwb muaj sia.
- Ntxiv mus, lawv yog cov hlwb sib txawv.
- Kuj, lawv yog ib feem ntawm osteon.
- Osteocytes yog tsim los ntawm osteoblasts.
Qhov txawv ntawm Osteoblasts thiab Osteocytes yog dab tsi?
Osteoblasts thiab osteocytes yog cov pob txha pob txha. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm osteoblasts thiab osteocytes yog lawv txoj haujlwm. Qhov ntawd yog; osteoblasts yog lub luag haujlwm rau cov pob txha tsim thaum osteocytes yog lub luag haujlwm rau kev tswj cov pob txha matrix. Tsis tas li ntawd, lwm qhov sib txawv ntawm osteoblasts thiab osteocytes yog tias cov osteoblasts yog cov hlwb tsis paub tab thaum cov osteocytes yog cov hlwb paub tab. Ntxiv mus, osteoblasts yog tsim los ntawm qia hlwb (osteogenic qia hlwb) thaum osteocytes yog tsim los ntawm osteoblasts.
Ib qhov sib txawv ntxiv ntawm osteoblasts thiab osteocytes yog lawv qhov chaw. Osteoblasts muaj nyob rau saum npoo ntawm cov pob txha tshiab. Osteocytes nyob hauv lacunae (sab hauv pob txha). Tsis tas li ntawd, osteoblasts tsis muaj qhov projections thaum osteocytes yam ntxwv muaj qhov projections. Li no, qhov no yog qhov sib txawv ntawm cov osteoblasts thiab osteocytes.
Summary – Osteoblasts vs Osteocytes
Nyob rau hauv kev qhia txog qhov sib txawv ntawm osteoblasts thiab osteocytes, osteoblasts thiab osteocytes yog ob hom pob txha hlwb. Txawm li cas los xij, osteoblasts yog cov pob txha tsis paub tab uas paub tab thiab hloov mus ua osteocytes. Ntxiv mus, osteoblasts yog lub luag haujlwm rau cov pob txha tsim thaum osteocytes tseem ceeb rau kev tswj cov pob txha loj lossis cov matrix. Tsis tas li ntawd, osteoblasts pib los ntawm mesenchymal qia hlwb thaum osteocytes los ntawm osteoblasts. Tsis tas li ntawd, osteoblasts muaj nyob rau saum npoo ntawm cov pob txha tshiab thaum osteocytes nyob hauv cov pob txha hauv lacunae.
