Cov txheej txheem:
Video: Dab tsi yog pob txha hauv av?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Pob txha thiab pob txha mos, zoo li txhua lwm cov ntaub so ntswg sib txuas, suav nrog cov cell thiab cov lej sib txawv. Nws yog av cov khoom ntawm matrix uas yog lub luag haujlwm tseem ceeb tshaj plaws rau qhov sib txawv sib txawv ntawm pob txha thiab pob txha mos. Cov av khoom ntawm pob txha yog mineralized, ua rau pob txha nruj thiab muaj zog, tab sis nkig.
Ua qhov no hauv kev txiav txim siab, txoj haujlwm ntawm pob txha hauv av yog dab tsi?
Pob txha yog cov ntaub so ntswg sib txuas uas muaj cov cell, fibers thiab av khoom Muaj ntau kev ua haujlwm hauv lub cev uas yog pob txha koom nrog, xws li khaws cov zaub mov, muab kev txhawb nqa sab hauv, tiv thaiv cov kabmob tseem ceeb, ua kom muaj zog, thiab muab cov chaw txuas rau cov leeg thiab cov leeg.
Ib yam nkaus, cov yam ntxwv ntawm pob txha yog dab tsi? Cov pob txha suav nrog kev ua neej nyob hlwb kos nyob rau hauv cov mineralized organic matrix. Cov lej no suav nrog cov khoom siv organic, feem ntau yog hom I collagen - "organic" hais txog cov khoom tsim los ntawm tib neeg lub cev - thiab cov khoom tsis muaj tshuaj, feem ntau yog hydroxyapatite thiab lwm yam ntsev ntawm calcium thiab phosphate.
Ib tus kuj tseem yuav nug tau, cov khoom siv hauv pob txha yog dab tsi?
Pob txha . Pob txha yog cov tawv nqaij sib txuas nyuaj tshaj plaws. Nws muab kev tiv thaiv rau cov kabmob sab hauv thiab txhawb nqa lub cev. Pob txha txhav txhav txhav txhav txhav txhav txhav txhav txhav txhav feem ntau yog cov collagen fibers tso rau hauv cov ntxhia cov khoom hauv av muaj hydroxyapatite, ib daim ntawv ntawm calcium phosphate.
3 hom pob txha hlwb yog dab tsi thiab lawv ua dab tsi?
Osteocytes, Osteoclasts thiab Osteoblasts yog 3 hom lus pob txha rau pob txha
- OSTEOCLASTS yog cov hlwb loj uas yaj cov pob txha. Lawv tuaj ntawm cov leeg pob txha thiab cuam tshuam nrog cov qe ntshav dawb.
- OSTEOBLASTS yog cov cell uas tsim cov pob txha tshiab.
- OSTEOCYTES yog cov cell hauv pob txha.
Pom zoo:
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