'S altatory' propagation yog ib hom tshwj xeeb ntawm kev nthuav tawm rau qhov ua tau zoo. Nws tsuas yog tshwm sim nrog 'heev' ntev axons ntawm paj hlwb. Lub hom phiaj ntawm hom kev nthuav tawm no yog txhawm rau txhawm rau nthuav dav.
Yuav ua li cas s altatory conduction tshwm sim?
Kev faib tawm. S altatory conduction tshwm sim nyob rau hauvcov paj hlwb myelinated ntawm vertebrates, tab sis tom qab tau pom nyob rau hauv ib khub ntawm medial myelinated giant fibers ntawm Fenneropenaeus chinensis thiab Marsupenaeus japonicus cws, nrog rau hauv nruab nrab loj fibers. ntawm ib tug earthworm.
Yuav ua li cas ntsev ntsev tshwm sim?
Lub myelin sheath yog qhwv ib ncig ntawm lub axon nyob rau hauv xws li ib tug zam, uas muaj ob peb qhov nyob rau hauv nruab nrab, cov no yog hu ua Nodes ntawm Ranvier. Tsuas yog tso lub impulse dhia ntawm ib ntawm mus rau lwm qhov, yog li hu ua S altatory Conduction.
Yuav ua li cas hom teeb liab nthuav tawm tshwm sim hauv Unmyelinated axons?
Txoj kev muaj peev xwm nthuav tawm raws cov axons unmyelinated yuav tsum tau ua kom muaj hluav taws xob-gated sodium raws raws tag nrho qhov ntev ntawm axon. Hauv qhov sib txawv ntawm qhov sib txawv, kev ua kom muaj peev xwm nthuav tawm raws li myelinated axons yuav tsum tau ua kom muaj hluav taws xob-gated sodium raws nkaus xwb hauv qhov chaw nodal.
Kev nthuav tawm tsis tu ncua tshwm sim nyob qhov twg?
Kev nthuav tawm - Tsiv cov peev txheej tsim tawm hauv axon hillock raws tag nrho ntev ntawm axon. Nruam propagation - ntawm kev ua muaj peev xwmnrog ib qho tsis muaj myelinate axon thiab cuam tshuam rau ib ntu ntawm axon ib zaug.
