Video: Diaphysis tsim li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Endochondral ossification yog txheej txheem ntawm kev txhim kho pob txha los ntawm pob txha mos hyaline. Tag nrho cov pob txha ntawm lub cev, tshwj tsis yog cov pob txha tiaj ntawm pob txha taub hau, cov leeg, thiab clavicles, yog tsim los ntawm endochondral ossification. Hauv cov pob txha ntev, chondrocytes daim ntawv ib daim qauv ntawm cov pob txha mos hyaline diaphysis.
Yooj yim heev, Diaphysis ua los ntawm dab tsi?
Nws yog ua nce ntawm cov pob txha cortical thiab feem ntau muaj cov pob txha pob txha thiab cov nqaij adipose (rog). Nws yog ib nrab tubular ib feem muaj li ntawm pob txha me me uas nyob ib puag ncig kab noj hniav hauv nruab nrab uas muaj cov leeg liab lossis daj. Hauv diaphysis , thawj ossification tshwm sim.
Qhov thib ob, ossification yog dab tsi thiab nws pib thaum twg? Kev tsim pob txha , kuj hu ossification , txheej txheem uas cov pob txha tshiab tsim. Ossification pib txog lub hlis thib peb ntawm lub neej hauv plab hauv tib neeg thiab ua tiav thaum tiav hluas.
Ntawm no, cov pob txha loj hlob thiab txhim kho li cas?
Pob txha Kev loj hlob Cov pob txha loj tuaj nyob rau qhov ntev ntawm lub phaj epiphyseal los ntawm cov txheej txheem uas zoo ib yam li endochondral ossification. Cov pob txha mos nyob rau hauv thaj tsam ntawm lub epiphyseal phaj ntawm ib sab ntawm lub epiphysis tseem mus loj hlob los ntawm mitosis. Osteoblasts txav mus rau hauv thiab ossify lub matrix tsim pob txha.
Ob hom kev ossification yog dab tsi?
Muaj ob hom ntawm pob txha ossification intramembranous thiab endochondral. Txhua yam ntawm cov txheej txheem no pib nrog mesenchymal cov ntaub so ntswg precursor, tab sis yuav ua li cas nws hloov mus rau hauv pob txha txawv.
Pom zoo:
Dab tsi yog lub npe ntawm cov khoom tsim uas yog qhov tseem ceeb rau kev pib tsim cov ntshav khov?
Thrombocytes (platelets) Megakaryocytes tsim los ntawm hemocytoblasts hauv cov pob txha liab. Thrombocytes dhau los ua nplaum thiab sib sau ua ke los ua cov platelet ntsaws uas kaw qhov tawg thiab kua muag hauv cov hlab ntshav. Lawv kuj pib tsim cov ntshav txhaws
Cov cheeb tsam twg ntawm cov phaj epiphyseal ze tshaj rau Diaphysis?
Phaj epiphyseal yog lub luag haujlwm rau kev loj hlob ntawm cov pob txha ntev. Thaj tsam loj hlob yog txheej txheej tom ntej mus rau diaphysis thiab muaj cov khoom sib dhos ntawm me me loj chondrocytes
Nyob rau theem dab tsi ntawm kev tsim cov kab mob fungal yog diploid cells tsim?
Hauv lub neej voj voog ntawm kev sib deev kis tus kab mob hu ua fungus, theem haploid hloov nrog qib diploid. The haploid theem xaus nrog nuclear fusion, thiab theem diploid pib nrog kev tsim zygote (diploid cell ua los ntawm fusion ntawm ob haploid cells)
Cov kab mob hauv qhov ncauj dab tsi metabolize sucrose tsim cov nplaum glucans thiab tsim cov quav hniav?
GTF yog qhov tseem ceeb enzyme uas catalyzes sucrose rau nplaum glucans thiab pab txhawb kev tsim cov hniav plaque nyob rau hauv uas lub tsub zuj zuj ntawm metabolic acids uas ua los ntawm cov kab mob colonies ua rau lub zos demineralization ntawm cov enamel nto (Loesche, 1986)
Qhov feem pua ntawm cov ntshav tau tsim los ntawm cov khoom tsim?
Cov qe ntshav no (uas tseem hu ua corpuscles lossis 'tsim cov ntsiab lus') suav nrog erythrocytes (cov qe ntshav liab, RBCs), leukocytes (cov qe ntshav dawb), thiab thrombocytes (platelets). Los ntawm qhov ntim, cov qe ntshav liab muaj li ntawm 45% ntawm cov ntshav tag nrho, cov ntshav plasma txog 54.3%, thiab cov qe dawb txog 0.7%