Nervous System, Lub Koom Haum ntawm Central myelin yog tsim los ntawm oligodendrocytes. Los ntawm kev tsim tawm (los ntawm tsis paub txhais tau tias) ntau helical tig ntawm plasmalemma ntawm cov lus qhia ntawm nws cov txheej txheem, ib qho oligodendrocyte ua rau 15–40 ntu ntu ntawm ob peb mus rau ntau axons (Fig. 21D).
ntu ntu internodal yog dab tsi?
Ib ntu ntu (lossis internode) yog feem ntawm cov paj hlwb ntawm ob Nodes ntawm Ranvier. Cov neurolemma lossis primitive sheath tsis cuam tshuam ntawm cov nodes, tab sis hla lawv ua ib daim nyias nyias.
Dab tsi yog qhov kev ncua deb?
Internodal lengths txhais los ntawm Schwann hlwb nyob rau hauv hindlimb qab haus huv, piv txwv li, muaj peev xwm mus rau ib tug 4-fold nce thaum nas txoj kev loj hlob, thiab regenerated paj hlwb muaj internodes uas yog uniformly luv [4, 5] ib. … Qhov no qhia tau hais tias muaj kev sib raug zoo ntawm internodal nrug thiab conduction ceev.
Dab tsi yog internode hauv neuron?
Lub Ib Hlis 22, 2021 / Neurosci. feem ntawm ib qho axon ntawm ob lub ntawm Ranvier. Internodes, tsis zoo li cov nodes ntawm Ranvier, yog them nrog myelin.
axons ua los ntawm dab tsi?
Ib qho axon yog ib fiber ntau uas txuas los ntawm cov neuron, lossis paj hlwb, thiab yog lub luag haujlwm rau kev xa hluav taws xob teeb liab los pab nrog kev nkag siab thiab kev txav. Txhua axon yog ib puag ncig los ntawm myelin sheath, ib txheej roj uas insulates lub axon thiab pab nws kis tau cov teeb liab ntev.nrug deb.
