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A sinapse é uma região de proximidade entre um neurônio e outra célula por onde é transmitido o impulso nervoso. Sabemos que os impulsos nervosos devem passar de uma célula à outra para que ocorra uma resposta a um determinado sinal.
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Neurônios são células do sistema nervoso que transmitem sinais elétricos e químicos. Eles possuem um corpo celular, dendritos e um axônio. Neurônios mielinizados têm axônios cobertos por mielina, o que acelera a transmissão dos impulsos nervosos, permitindo que o sinal "salte" entre os nódulos de Ranvier, tornando a comunicação mais rápida e eficiente. #biologia #enem #vocesabia #curiosidades #vestibular
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A bainha de mielina envolve os axônios acelerando a velocidade da condução dos impulsos nervosos. A lesão ou destruição dessas estruturas pode tornar os impulsos nervosos cada vez mais lentos ou causar interrupção da propagação. A doença desmielinizante mais conhecida é a esclerose múltipla. #repost from @canalneurogenese Reposted by @repostfast
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