Lub myelin sheath tsis tas mus li kom tso cai rau kev ua kom muaj ntsev ntsev ntsev ntsev ntsev ntsev (los ntawm Latin s altare, dhia lossis dhia) yog kev nthuav tawm ntawm qhov muaj peev xwm ua raws li myelinated axons los ntawm ib qho ntawm Ranvier mus rau lub tom ntej node, nce qhov kev nrawm nrawm ntawm kev ua haujlwm. https://en.wikipedia.org › wiki › S altatory_conduction
S altatory conduction - Wikipedia
Vim li cas cov myelin sheath tsis txuas ntxiv?
Cov qauv tsis tu ncua ntawm myelin sheath tshwm sim nyob rau hauv s altatory conduction, uas yog qhov ua tau "dhia" los ntawm ib qho ntawm Ranvier, dhau ntawm qhov ntev myelinated stretch ntawm lub axon hu ua tus internode, ua ntej "recharging" ntawm lub tom ntej node ntawm Ranvier, thiab hais txog, kom txog rau thaum nws mus txog lub axon davhlau ya nyob twg.
Yuav ua li cas yog tias myelin sheath txuas ntxiv?
Yog tias myelin sheath txuas ntxiv rau hauv myelinated paj fiber ntau qhov nrawm nce hauv neuronal conduction, ces conduction yuav qeeb. … Thaum lub nrawm nce ntxiv, nws yuav cuam tshuam rau cov neuronal conduction ces conduction yuav qeeb.
Puas yog myelin sheath discontinuous?
Cov medullary sheath ua rau cov txheej txheem txuas ntxiv hauv lub hlwb thiab qaum qaum thiab yog tsis tu ncua ntawm ntu ntu hauv lub paj hlwb peripheral. … Neurilemma thiab myelin sheath tsis txuas ntxiv: kom muaj ib qho ntawm Ranvier myelin sheath yuav tsum tsis muaj tab sis nws tsis tsim nyog tias neurilemma tuaj yeem ua tsis tau.
Vim li cas cov neurons tsis tuaj yeem muaj qhov txuas ntxiv ntawm myelin los ntawm sab saum toj ntawm axon mus rau hauv qab?
Cov myelin sheath tsis npog tag nrho axon; nws tawm me me ntu uncovered. Cov ntu me me no hu ua cov nodes ntawm Ranvier.… Yog vim li cas cov myelin sheath ua kom cov neural conduction yog qhov qhov kev ua haujlwm muaj peev xwm dhia tawm ntawm ib qho ntawm Ranvier mus rau lwm qhov
