Qhov sib txawv tseem ceeb ntawm lacunae thiab osteocytes yog lacunae yog qhov chaw me me hauv lamellae uas muab thaj chaw rau osteocytes, thaum osteocytes yog hom pob txha uas tswj cov pob txha loj.
Pob txha yog cov nqaij nyob thiab loj hlob uas ua rau cov pob txha ntawm tib neeg thiab lwm cov vertebrates. Nws muaj ntau hom cell, xws li osteoblasts, osteocytes, osteoclasts thiab cov pob txha hauv ob sab phlu. Cov hlwb no ua tiav cov haujlwm sib txawv hauv cov pob txha. Ntawm plaub hom hlwb, osteocytes yog lub luag haujlwm rau kev saib xyuas cov pob txha loj. Ntxiv mus, cov pob txha compact tsim txheej txheej ntawm cov pob txha feem ntau thiab muab kev tiv thaiv thiab kev txhawb nqa. Osteon yog lub luag haujlwm tseem ceeb ntawm cov pob txha pob txha, thiab nws muaj plaub yam sib txawv. Lawv yog Haversian kwj dej, lamellae, lacunae thiab canaliculi. Lub lacunae yog qhov chaw me me hauv lamellae uas muab thaj chaw rau cov pob txha hlwb lossis osteocytes.
Lacunae yog dab tsi?
Lacunae yog qhov chaw me me oblong uas nyob hauv cov osteocytes. Hauv lwm lo lus, lacunae ncig osteocytes hauv osteons. Qhov tseem ceeb tshaj plaws, ib lub lacuna tsev tsuas yog ib qho osteocyte. Yog li ntawd, lacuna tsis tuaj yeem muaj ntau tshaj ib qho osteocyte hauv nws. Muaj ntau ntau lacunae nyob rau hauv ib qho osteon nyob nruab nrab ntawm lamellae. Nyob rau hauv lub microscope, lawv tshwm li fusiform opaque me ntsis.
Daim duab 01: Lacuna
Cov kwj dej me me hu ua canaliculi txuas lacunae nrog ib leeg. Cov canaliculi pab txhawb kev hloov pauv ntawm cov tshuaj, suav nrog cov khoom noj khoom haus thiab cov khoom pov tseg los ntawm osteocytes mus rau sab nrauv ntawm kev nthuav dav.
Osteocytes yog dab tsi?
Osteocytes yog ib hom pob txha hlwb uas muaj nyob rau hauv cov pob txha laus. Structurally, lawv yog lub hnub qub-zoo li lub hlwb nrog kev kwv yees. Qhov loj ntawm lub cev ntawm lub cev ntawm osteocyte yuav txawv ntawm 5-20 micrometers inch. Feem ntau, ib tug laus osteocyte muaj tsuas yog ib tug nucleus. Ntxiv rau cov no, nws muaj qhov txo qis endoplasmic reticulum, mitochondria thiab Golgi apparatus thiab cov txheej txheem ntawm tes uas tawm mus rau matrix. Muaj txog 42 billion osteocytes nyob rau hauv tib neeg lub cev. Cov hlwb no muaj qhov nruab nrab ib nrab-lub neej ntawm 25 xyoo.
Osteocytes nyob hauv qhov chaw hu ua lacunae. Lawv tsim los ntawm osteoblasts. Thaum cov osteoblasts nkag mus rau hauv cov matrix uas lawv zais lawv tus kheej, lawv loj hlob thiab loj hlob mus rau hauv osteocytes. Osteocytes tshwm sim interconnected thiab networked rau ib leeg los ntawm ntev cytoplasmic extensions.
Daim duab 02: Pob txha pob txha
Osteocytes ua tiav ntau lub luag haujlwm suav nrog kev sib xyaw molecular, kev hloov kho thiab kev sib kis nyob deb. Yog li, lawv cov dej num zoo ib yam li lub paj hlwb. Cov laus osteocytes ua tiav feem ntau ntawm cov haujlwm tseem ceeb hauv cov pob txha ua haujlwm. Tsis tas li ntawd, osteocytes ua haujlwm tseem ceeb ntawm cov pob txha loj thiab ua tus tswj hwm endocrine hauv phosphate metabolism. Muaj ntau yam cuam tshuam rau kev tuag ntawm osteocytes. Lawv yog necrosis, senescence, apoptosis lossis engulfment ntawm osteoclasts. Kev puas tsuaj osteocyte tuaj yeem ua rau tus kab mob hu ua osteoporosis.
Dab tsi zoo sib xws ntawm Lacunae thiab Osteocytes?
- Lacunae ncig osteocytes lossis pob txha hlwb.
- Lawv pom hauv pob txha.
- Lawv nyob nruab nrab ntawm lamellae.
- Muaj ntau lacunae thiab osteocytes hauv cov pob txha.
- Hauv ib lub lacuna, tsuas muaj ib qho osteocyte.
Qhov txawv ntawm Lacunae thiab Osteocytes yog dab tsi?
Qhov sib txawv tseem ceeb ntawm lacunae thiab osteocytes yog lacunae yog qhov chaw thaum osteocytes yog nucleated nyob pob txha hlwb. Lub luag haujlwm tseem ceeb ntawm lacunae yog muab qhov chaw rau osteocytes thaum lub luag haujlwm tseem ceeb ntawm osteocytes yog kev saib xyuas cov pob txha. Yog li, qhov no yog qhov sib txawv ntawm lacunae thiab osteocytes.
Hauv qab infographic qhia cov ntsiab lus ntxiv ntawm qhov sib txawv ntawm lacunae thiab osteocytes.
Summary – Lacunae vs Osteocytes
Osteon yog ib chav tsev ntawm cov pob txha pob txha. Nws muaj cov khoom sib txawv, suav nrog lacunae thiab osteocytes. Lacunae yog qhov chaw me me oblong uas nyob hauv tsev osteocytes. Osteocytes yog ib qho ntawm plaub hom pob txha hlwb uas muaj lub hnub qub zoo li. Cov hlwb no yog lub luag haujlwm rau kev saib xyuas cov pob txha loj thiab cov qauv feem ntau. Yog li, qhov no qhia txog qhov sib txawv ntawm lacunae thiab osteocytes.
