Video: Dab tsi yog qhov txawv ntawm cov pob txha thawj thiab theem nrab?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Thawj pob txha . Thawj pob txha yog thawj pob txha cov ntaub so ntswg uas tshwm hauv kev txhim kho embryonic thiab kho kho pob txha. Nws yog qhov tshwj xeeb los ntawm nws txoj haujlwm random ntawm collagen fibers. Cov cov pob txha theem nrab muaj qis tus nqi ntawm osteocytes li ntawd thawj pob txha Nws yooj yim dua nkag los ntawm x-ray.
Ib yam li ntawd, koj tuaj yeem nug, qhov txawv ntawm qhov pib thiab theem nrab ossification yog dab tsi?
Muaj ob hom ossification chaw - thawj thiab theem nrab . A thawj ossification chaw yog thawj thaj tsam ntawm pob txha los pib ossifying. Nws feem ntau tshwm sim thaum lub sij hawm cev xeeb tub hauv ib feem ntawm txhua tus pob txha txhim kho. Hauv cov pob txha ntev, cov theem nrab cov chaw tshwm sim hauv epiphyses.
Tsis tas li ntawd, leej twg ntawm cov hauv qab no tsis yog qhov sib txawv loj ntawm cov pob txha hauv thawj thiab theem nrab? Thawj pob txha muaj ntau ntawm inorganic matrix, thaum theem nrab tsis. Thawj pob txha yog tsis muaj zog li pob txha thib ob . Thawj pob txha muaj cov txheej txheem collagen tsis xwm yeem, thaum theem nrab tau teem caij tsis tu ncua.
Ib sab saum toj no, qhov txawv ntawm qhov mob qog nqaij hlav hauv nruab nrab thiab theem nrab yog dab tsi?
Thawj thiab mob qog noj ntshav pob txha Thawj mob qog noj ntshav pob txha pib hauv cov cell pob txha . Cov mob qog noj ntshav cell yog pob txha cov cell uas tau dhau los ua qog noj ntshav. Lawv muaj mob qog noj ntshav cov cell uas tau kis mus rau hauv lub pob txha los ntawm a mob qog noj ntshav lwm qhov hauv lub cev. Qhov no hu ua theem nrab los yog metastatic mob qog noj ntshav.
Thawj qhov kev xaiv tsa thib ob thiab thib ob nyob qhov twg?
Feem ntau lwm cov pob txha (xws li vertebrae) kuj muaj thawj ossification chaw, thiab pob txha yog pw zoo ib yam. Cov theem nrab cov chaw feem ntau tshwm ntawm epiphysis. Secondary ossification feem ntau tshwm sim tom qab yug me nyuam (tshwj tsis yog lub plab femur thiab tibia proximal uas tshwm sim thaum lub hli 9 ntawm kev loj hlob ntawm fetal).
Pom zoo:
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