S altatory conduction tshwm sim dav hauv cov paj hlwb myelinated ntawm vertebrates, tab sis tom qab ntawd tau pom nyob rau hauv ib khub ntawm medial myelinated giant fibers ntawm Fenneropenaeus chinensis thiab Marsupenaeus japonicus cw, thiab. nyob rau hauv ib tug nruab nrab loj fiber ntau ntawm lub earthworm.
Yuav ua li cas ntsev ntsev tshwm sim?
S altatory conduction piav qhia txog txoj kev hluav taws xob impulse hla ntawm node mus rau ntawm qhov ntev ntawm ib qho axon, ua kom lub zog tuaj txog ntawm lub zog ntawm lub paj hlwb hauv kev sib piv nrog cov qeeb qeeb qeeb zuj zus ntawm depolarization kis mus rau ib qho tsis muaj myelinated axon.
Puas s altatory conduction tshwm sim hauv Unmyelinated axons?
S altatory conduction nyob rau hauv unmyelinated axons: pawg ntawm Na+ channels ntawm lipid rafts enables micro-s altatory conduction nyob rau hauv C-fibers. Lub peev xwm ua tau (AP), lub cim tseem ceeb ntawm lub paj hlwb, yog nqa los ntawm ob hom axons: unmyelinated thiab myelinated fibers.
Yuav ua li cas hauv qab no ua rau kev ua kom muaj ntsev ua tau?
Nyob rau hauv lub paj hlwb peripheral, s altatory conduction yog ua tau los ntawm ib tug series ntawm morphologically thiab molecularly txawv subdomains nyob rau hauv ob qho tib si axons thiab lawv txuam myelinating Schwann hlwb.
Qhov twg qhov kev txiav txim muaj peev xwm pib thiab piav qhia txog cov txheej txheem ntawm kev ua kom ntsev ntawm cov leeg ntawm Ranvier?
Qhov kev ua haujlwm muaj peev xwm taug kev los ntawm ib qho chaw hauv lub xovtooj mus rau lwm qhov, tab sis ion ntws hla ntawm daim nyias nyias tshwm sim tsuas yog ntawm cov leeg ntawm Ranvier Vim li ntawd, qhov kev txiav txim muaj peev xwm dhia dhia raws lub axon, los ntawm node mus rau ntawm node, es tsis propagating smoothly, raws li lawv ua nyob rau hauv axons uas tsis muaj ib tug myelin sheath.
