nervous system
US /ˈnɜːr.vəs ˌsɪs.təm/
UK /ˈnɜːr.vəs ˌsɪs.təm/

1.
sistema nervioso
the network of nerve cells and fibers that transmits nerve impulses between parts of the body.
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The brain and spinal cord are part of the central nervous system.
El cerebro y la médula espinal son parte del sistema nervioso central.
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Stress can have a significant impact on your nervous system.
El estrés puede tener un impacto significativo en tu sistema nervioso.