1 a 8-tecido nervoso
TRANSCRIPT
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A Capacidade do ser humano de receber, interpretar e responder a estímulos ambientais e interno se da pelo meio do:
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Tecido Nervoso
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O tecido Nervoso é formado por células altamente especializadas:
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•Os neurônios são responsáveis pela conduções dos impulsos nervosos .
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Neurônios
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Os impulsos nervosos são
alterações elétricas que se
propagam através da membrana
plasmática das células
nervosas.
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E é isso que nos permite :
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Os neurônios são compostos por três partes :
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O Corpo Celular contém:
• Núcleo
• Citoplasma
• Organelas (Lisossomos, Mitocôndrias e complemento de Golgi)
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Dendritos são
ramificações , parte
receptores dos
neurônios.
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Axônio:São eixos finos,
cilíndricos e longos
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Acetilcolina Adrenalina
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Serotonina Dopamina
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Podemos Subdividir o Sistema
Nervoso em Dois ;
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Sistema Nervos Periférico
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• Conforme o tipo de Dendritos e de Axônios presentes nas células Nervosas podemos classificar os neurônios em ;
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Arco Reflexo
• É a resposta involuntária rápida. Visa uma proteção ou adaptação do organismo e tem origem em um estímulo externo, que ocorre antes mesmo do cérebro tomar conhecimento do estímulo periférico.
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O local de
comunicação entre
dois neurônios é
denominado:
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As Sinapses são regiões de conexão química que podem ser interneurais,neuromusculares ouNeuroglandulares dependendo de onde estão estabelecidas.
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Sensitivos
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• Conduzem os impulsos nervosos de órgãos dos sentidos e das células sensoriais para o sistema
nervoso central ;
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Motores
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• Conduzem os impulsos nervosos do sistema nervoso central para os órgãos ;
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Associativos
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•Fazem a conexão entre os neurônios .
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