Thaum twg muaj cov kwj dej hav zoov nyob?
Thaum twg muaj cov kwj dej hav zoov nyob?

Video: Thaum twg muaj cov kwj dej hav zoov nyob?

Video: Thaum twg muaj cov kwj dej hav zoov nyob?
Video: Lam Khwv Lam Nyob - Ntxiag Hawj 2024, Lub peb hlis ntuj
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Haversian kwj dej (qee zaum cov kwj dej ntawm Havers) yog cov hlab ntsha me me nyob rau thaj tsam sab nraud ntawm cov pob txha hu ua pob txha cortical. Lawv tso cai rau cov hlab ntsha thiab cov hlab ntsha mus los ntawm lawv los muab cov osteocytes.

Qhov chaw thiab kev ua haujlwm ntawm cov kwj dej hav zoov yog dab tsi?

Haversian kwj dej yog cov hlab me me los yog qhov hauv cov pob txha cortical uas lub tsev paj hlwb thiab ob peb lub capillariesQhov no tso cai rau cov pob txha kom tau oxygen thiab khoom noj khoom haus yam tsis muaj vascular heev. Cov kwj dej no kuj sib txuas lus nrog cov pob txha siv cov kev sib txuas tshwj xeeb, lossis canaliculi.

Nyob rau hauv cov ntaub so ntswg yog haversian kwj dej pom?

pob txha pob txha muaj cov khoom ntim zoo sib xws los yog cov txheej txheem haversian. Lub osteon muaj lub hauv paus kwj dej hu ua osteonic (haversian) kwj dej, uas yog surrounded los ntawm concentric rings (lamellae) ntawm matrix.

pom osteons nyob qhov twg?

2 Tus qauv ntawm osteon. Cov pob txha pob txha pom muaj nyob rau hauv cov pob txha cylindrical ntawm cov pob txha ntev feem ntau hauv cov pob txha Nws feem ntau muaj cov osteons uas muaj cov lamellae uas yog cylindrically qhwv nyob ib ncig ntawm cov hlab ntsha hauv nruab nrab (Haversian system lossis osteon theem nrab). Cov osteons thib ob no tsim thaum lub sijhawm kho pob txha.

Tus Canal Haversian yog dab tsi thiab vim li cas nws tseem ceeb?

Cov kwj dej Haversian ncig cov hlab ntsha thiab paj hlwb thoob plaws hauv cov pob txha thiab sib txuas lus nrog osteocytes. Cov kwj dej thiab ib puag ncig lamellae yog hu ua Haversian system (los yog osteon).

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