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When Mr. Valdez thought his 1-year-old daughter had fallen down the stairs, his heartbeat accelerated, his blood pressure rose, and he began to perspire heavily. Mr. Valdez's state of arousal was activated by his ________ nervous system.

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Answer:the sympathetic nervous system

Explanation:when the right signal is sent to the brain, there's a rise in catecholamine level causing the narrowing of blood vessels and a consequent rise in blood flow/pressure

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