Video: Appositional loj hlob muaj hnub nyoog li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntev pob txha kev loj hlob yog nrog los ntawm kev hloov kho uas suav nrog appositional kev loj hlob kom tuab cov pob txha. Cov txheej txheem no muaj cov pob txha tsim thiab reabsorption. Pob txha kev loj hlob nres ib ncig ntawm hnub nyoog ntawm 21 rau cov txiv neej thiab cov hnub nyoog ntawm 18 rau poj niam thaum epiphyses thiab diaphysis tau fused (epiphyseal phaj kaw).
Ib yam li ntawd, tib neeg nug, Appositional kev loj hlob tshwm sim li cas?
Cov txheej txheem ntawm appositional kev loj hlob tshwm sim thaum tus qauv pob txha mos kuj loj hlob nyob rau hauv thickness vim qhov sib ntxiv ntawm extracellular matrix ntawm peripheral pob txha mos nto, uas yog nrog los ntawm tshiab chondroblasts uas tsim los ntawm lub perichondrium.
Ib sab saum toj no, qhov pob txha pob txha loj hlob tshwm sim nyob qhov twg? Nruab nrab kev loj hlob tshwm sim nyob rau hauv hyaline pob txha mos ntawm epiphyseal phaj, nce ntev ntawm kev loj hlob pob txha . Kev cog qoob loo tshwm sim ntawm qhov chaw endosteal thiab periosteal, nce qhov dav ntawm kev loj hlob pob txha . Nruab nrab kev loj hlob xwb tshwm sim tsuav yog hyaline tam sim no, ua tsis tau tshwm sim tom qab epiphyseal phaj kaw.
Ib yam li ntawd, koj tuaj yeem nug, Kev loj hlob ntawm Appositional yog dab tsi?
Kev loj hlob zoo yog qhov nce hauv txoj kab uas hla ntawm cov pob txha los ntawm kev sib ntxiv ntawm cov pob txha ntawm cov pob txha. Osteoblasts ntawm cov pob txha nto zais cov pob txha matrix, thiab osteoclasts nyob rau sab hauv sab hauv tawg pob txha.
Thaum twg cov pob txha ossify?
Pob txha ossification los yog osteogenesis, yog txheej txheem ntawm pob txha tsim. Cov txheej txheem no pib ntawm lub lim tiam thib rau thiab xya ntawm kev txhim kho embryonic thiab txuas ntxiv mus txog thaum txog hnub nyoog nees nkaum tsib; txawm hais tias qhov no txawv me ntsis raws tus neeg.
Pom zoo:
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