Mute
oLucasBacca Enfermeiro
Você acha que o átrio não serve para quase nada? Na prática, ele faz menos do que o ventrículo. Mas ignorar o papel dele pode te fazer errar feio. O átrio recebe o sangue e, quando a válvula abre, cerca de 80% já desce para o ventrículo sozinho. Só que sempre fica um restante. E é aí que entra a contração do átrio. Ela não é responsável pelo volume principal, mas é ela que evita que esse sangue fique parado. Agora pensa na fibrilação atrial. O átrio não contrai. Ele só vibra. O sangue co
Follow
114
4
15
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