2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
'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.
Pom zoo:
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Nyob rau hauv qhov kev txiav txim siab yog qhov kev sib tw yog kev tawm tsam kev tawm tsam?
Lub Ntiaj Teb Beat paub txog nws tsis lees paub cov khoom siv thiab cov qauv niaj hnub, kev sim tshuaj, thiab kev ywj pheej ntawm sab ntsuj plig thiab kev sib deev. Nws hloov zuj zus nyob rau xyoo 1960 los ua ib feem ntawm hippie thiab loj dua counterculture txav.
Qhov kev tawm tsam tawm tsam nyob qhov twg?
Nws yooj yim heev los ntxiv thiab tshem tawm kev tawm tsam rau cov lus hauv kev sau email. Kauj ruam 1: Xaiv cov ntawv koj yuav ntxiv kev sib tw rau hauv Message window. Kauj Ruam 2: Nias lub pob Strikethrough hauv pawg Font ntawm Cov Ntawv Cim Tab.
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
