Hearing a rattlesnake is most likely to trigger which physiological response?

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Multiple Choice

Hearing a rattlesnake is most likely to trigger which physiological response?

Hearing a rattlesnake triggers the fight-or-flight response—the body's rapid mobilization to a perceived threat. The brain detects danger and activates the sympathetic branch of the autonomic nervous system, unleashing adrenaline that speeds up the heart rate and breathing, widens the pupils, and redirects blood toward the muscles. This surge readies you to either confront the danger or escape from it. Once the threat subsides, the parasympathetic system helps restore calm. The other options don’t fit this immediate reaction: the parasympathetic system is about relaxation, not the quick surge tied to danger; homeostatic stabilization refers to maintaining internal balance over time rather than an acute response; and somatic growth is about development, not reacting to a threat.

Hearing a rattlesnake triggers the fight-or-flight response—the body's rapid mobilization to a perceived threat. The brain detects danger and activates the sympathetic branch of the autonomic nervous system, unleashing adrenaline that speeds up the heart rate and breathing, widens the pupils, and redirects blood toward the muscles. This surge readies you to either confront the danger or escape from it. Once the threat subsides, the parasympathetic system helps restore calm. The other options don’t fit this immediate reaction: the parasympathetic system is about relaxation, not the quick surge tied to danger; homeostatic stabilization refers to maintaining internal balance over time rather than an acute response; and somatic growth is about development, not reacting to a threat.

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