Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?

Cov txheej txheem:

Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?
Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?

Video: Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?

Video: Puas yog cov hlab ntsha hauv lub hlwb puas yog myelinated?
Video: Xov Xwm Coj Tau Toj Taug Kuab Txhuas-Mus Tsev Rau Cov Neeg Ua Hauj lwm Rau Water Gremlin 2024, Hlis ntuj nqeg
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Txhua lub paj hlwb, tshwj tsis yog optic thiab olfactorycov hlab ntsha, uas suav tias yog qhov ncaj qha nthuav dav ntawm lub hauv nruab nrab paj hlwb, muaj thaj chaw hloov pauv ntawm nruab nrab myelin (los ntawm oligodendrocytes) thiab peripheral myelin (tsim los ntawm Schwann hlwb).

Cov paj hlwb twg yog myelinated los ntawm oligodendrocytes?

Cov paj hlwbyog tib lub paj hlwb uas yuav tsum tau myelinated los ntawm oligodendrocytes. Cov paj hlwb trigeminal yuav yog myelinated los ntawm Schwann hlwb.

Puas yog lub ntsej muag paj hlwb myelinated?

Zoo. Medial REZ ntawm lub ntsej muag paj hlwb yog txhais tau tias 2.6 hli ntev thiab npog los ntawm glial sheath txuas ntxiv los ntawm glial limiting membrane ntawm lub paj hlwb qia. Glial sheath ntawm central myelin nyhav dhau los ua nyias mus rau qhov chaw hloov pauv.

Puas yog paj hlwb CNS lossis PNS?

Cov hlab ntsha hauv lub cev yog xav txog cov khoom ntawm lub paj hlwb peripheral (PNS), txawm hais tias nyob rau theem txheej txheem olfactory, optic thiab cov hlab ntsha hauv nruab nrab tau raug suav tias yog ib feem ntawm lub hauv paus. lub paj hlwb (CNS). 12 khub ntawm cranial qab haus huv yog cov hlab ntsha tshwj xeeb cuam tshuam nrog lub hlwb.

Puas cranial qab haus huv contralateral?

Cov leeg no yog lub luag haujlwm rau sab hauv tig ntawm lub qhov muag. Nws yog tib lub paj hlwb uas tshwm sim los ntawm lub hlwb dorsally thiab tib lub cranial paj uas innervates contralateral lug.

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