Spongy (Cancellous) Pob txha pob txha pob txha muaj cov phaj (trabeculae) thiab cov pob txha ntawm cov pob txha nyob ib sab ntawm cov kab noj hniav me me uas muaj cov pob txha liab. Lub canaliculi txuas mus rau cov kab noj hniav uas nyob ib sab, tsis yog lub hauv paus hav txwv yeem, kom tau txais lawv cov ntshav.
Hoversian systems pom nyob qhov twg?
Cov kab ke no muaj nyob hauv cov pob txha matrix ntawm cov pob txha ntev zoo li femur, humerus thiab lwm yam. Cov kwj dej haversian muaj cov hlab ntsha, cov hlab ntsha, cov ntaub so ntswg isolar, cov hlab ntsha thiab lymph. Nws tseem hu ua osteon.
Dab tsi yog pom hauv pob txha tshem tawm?
Ntxiv rau qhov muab cov qauv kev ruaj ntseg, cov pob txha tshem tawm muaj feem ntau ntawm lub cev pob txha liab, uas tsim cov qe ntshav. Cov pob txha pob txha pom nyob rau hauv cov pob txha tshem tawm kuj muaj ntau cov qia hlwb uas siv los kho cov pob txha puas lossis tawg.
Qhov twg ntawm cov pob txha yog cov kwj dej hav zoov pom?
Haversian kwj dej yog muaj hauv osteons, uas feem ntau yog teem raws li ntev axis ntawm cov pob txha nyob rau hauv parallel mus rau saum npoo. Cov kwj dej thiab ib puag ncig lamellae (8-15) tsim cov haujlwm ua haujlwm, hu ua Haversian system, lossis osteon.
3 hom pob txha yog dab tsi?
Muaj peb hom hlwb uas ua rau cov pob txha homeostasis. Osteoblasts yog pob txha tsim cell, osteoclasts resorb los yog tawg pob txha, thiab osteocytes yog cov pob txha paub tab. Kev sib npaug ntawm osteoblasts thiab osteoclasts tswj cov pob txha.
