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.
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
