Qhov sib txawv tseem ceeb ntawm microglia thiab macroglia yog tias microglia yog lub cev tiv thaiv kab mob ntawm lub hauv paus paj hlwb uas tiv thaiv kev raug mob thiab kab mob thaum microglia yog cov hlwb txhawb nqa neuronal uas feem ntau muab kev txhawb nqa khoom noj, tswj lub hlwb metabolism thiab homeostasis, thiab tsim myelin sheath ncig axons.
Glial hlwb lossis neuroglia yog hom cell ntau tshaj tam sim no hauv CNS. Muaj ob hom glial hlwb li microglia thiab macroglia. Microglia yog cov tshuaj tiv thaiv kab mob hauv lub hauv nruab nrab paj hlwb. Qhov tseeb, lawv yog cov macrophages tshwj xeeb uas muaj peev xwm ua phagocytosis thiab rhuav tshem cov kab mob. Macroglia pab nyob rau hauv cov synthesis ntawm myelin thiab muab kev noj haus txaus rau lub paj hlwb. Macroglia hlwb muaj xws li oligodendrocytes, astrocytes, ependymal hlwb, Schwann hlwb thiab satellite hlwb. Lawv pom muaj nyob hauv CNS thiab PNS.
Microglia yog dab tsi?
Microglia yog hom neuroglia hauv lub hlwb. Lawv yog cov tshuaj tiv thaiv kab mob los ntawm embryonic mesoderm. Yog li ntawd, lawv yog cov tiv thaiv hlwb nyob rau hauv lub hauv paus paj hlwb. Lawv yog cov macrophages tshwj xeeb.
Daim duab 01: Microglia
Microglia yog cov hlwb me tshaj plaws nrog lub ntsej muag oval-puab nuclei. Lawv muaj cov txheej txheem elongated, uas pab lawv txav ntawm chemotaxis. Microglia yog activated los ntawm o nyob rau hauv lub hauv paus paj hlwb. Tom qab ntawd lawv ua raws li macrophages thiab kho cov lus teb tiv thaiv kab mob hauv nruab nrab paj hlwb. Cov hlwb no koom nrog hauv kev tshem tawm cov khib nyiab ntawm tes thiab cov neurons tuag los ntawm cov ntaub so ntswg ntawm phagocytosis.
Macroglia yog dab tsi?
Macroglia yog hom thib ob ntawm glial hlwb. Muaj peb hom microglia nyob rau hauv lub hauv paus paj hlwb: astrocytes, oligodendrocytes, thiab ependymal hlwb. Nyob rau hauv lub peripheral paj hlwb, muaj ob lub ntsiab ntawm microglia li Schwann hlwb thiab satellite hlwb. Astrocytes yog cov kab mob glial ntau tshaj plaws nyob rau hauv nruab nrab paj hlwb. Lawv yog cov hnub qub zoo li cov hlwb uas ua tiav ntau lub luag haujlwm tseem ceeb, suav nrog kev tsim cov ntshav hlwb teeb meem, kev tswj cov tshuaj nyob ib ncig ntawm lub hlwb, kev tswj cov hlwb metabolism thiab homeostasis, muab khoom noj, dej thiab ions los ntawm periphery mus rau lub hlwb thiab synchronization ntawm cov haujlwm ntawm axons.
Oligodendrocytes yog cov neuroglia uas tsim cov myelin sheath ncig lub axons. Ntxiv mus, lawv zais qee yam kev loj hlob los pab neuronal kev loj hlob thiab kev loj hlob. Myelin sheaths insulate lub axons los tiv thaiv kev poob ntawm cov teeb liab thiab nce tus nqi ntawm cov teeb liab kis tau tus mob. Ependymal hlwb yog lub luag haujlwm rau tsim thiab zais cerebrospinal kua (CSF).
Daim duab 02: Hom Glia
Schwann hlwb tsim cov myelin nyob ib ncig ntawm axons hauv cov neurons ntawm lub paj hlwb peripheral. Ntxiv mus, Schwann hlwb ua raws li lub cev tiv thaiv kab mob hauv PNS thiab koom nrog hauv kev tshem tawm cov khib nyiab ntawm tes thiab rov loj hlob ntawm cov neurons hauv PNS. Satellite cells tswj cov tshuaj lom neeg sab nraud hauv PNS.
Qhov Zoo sib xws ntawm Microglia thiab Macroglia yog dab tsi?
- Ob qho microglia thiab microglia yog ob hom loj ntawm glial hlwb.
- Lawv yog cov hlwb uas tsis yog neuronal hauv lub paj hlwb.
- Ntxiv mus, lawv yog cov hlwb txhawb nqa neuronal.
- Lawv tsis koom nrog kev sib kis ntawm paj hlwb.
Qhov txawv ntawm Microglia thiab Macroglia yog dab tsi?
Microglia yog cov tshuaj tiv thaiv kab mob hauv lub hauv nruab nrab paj hlwb uas ua raws li macrophages thiab tiv thaiv lub hlwb ntawm kev raug mob thiab kab mob. Macroglia yog cov hlwb txhawb nqa uas feem ntau muab kev txhawb nqa khoom noj, tswj lub hlwb metabolism thiab homeostasis, thiab tsim myelin sheath ncig axons. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm microglia thiab microglia. Tsis tas li, lwm qhov sib txawv tseem ceeb ntawm microglia thiab microglia yog qhov microglia tau muab los ntawm embryonic mesoderm thaum lub macroglia tau muab los ntawm neuroectoderm.
Tsis tas li ntawd, microglia pom tsuas yog nyob rau hauv lub hauv nruab nrab lub paj hlwb thaum microglia pom nyob rau hauv nruab nrab thiab peripheral paj hlwb.
Hauv qab infographic tabulates ntau qhov sib txawv ntawm microglia thiab microglia.
Summary – Microglia vs Macroglia
Neuroglia yog cov hlwb uas tsis yog neuronal txhawb nqa ntawm cov neurons hauv lub paj hlwb. Muaj ob hom neuroglia li microglia thiab macroglia. Microglia yog cov tshuaj tiv thaiv kab mob hauv lub hauv nruab nrab paj hlwb. Lawv tiv thaiv lub hauv paus paj hlwb los ntawm kev raug mob thiab kab mob. Macroglia yog cov hlwb txhawb nqa neuronal nyob rau hauv nruab nrab thiab peripheral paj hlwb. Lawv koom nrog ntau yam kev ua haujlwm, suav nrog kev sib txuas ntawm myelin, kev tswj cov tshuaj nyob ib puag ncig lub hlwb, rov loj hlob ntawm cov neurons, tshem tawm cov khib nyiab ntawm tes thiab cov neurons tuag, thiab lwm yam. Yog li, qhov no qhia txog qhov sib txawv ntawm microglia thiab microglia.
