The body's response to danger is called what?

The body's response to danger is called what?

• A. Relaxation response
• B. Fight or flight
• C. Sleep cycle
• D. Immune reaction

Answer: (B)

Facing danger triggers the fight-or-flight response, a rapid, automatic adjustment by the autonomic nervous system. The brain perceives threat and signals the hypothalamus, which activates the sympathetic branch. Adrenal glands release adrenaline and noradrenaline, increasing heart rate and blood pressure, speeding up breathing, dilating pupils, and diverting blood to the muscles. This prepares the body to either fight or flee, providing quick energy via released glucose and heightened alertness. Once the danger passes, the parasympathetic system quiets these changes and the body returns to a rested state. If this response happens often or for long periods, it can contribute to stress-related health issues. The other terms describe calming responses (relaxation), normal rest-wake cycles (sleep cycle), or immune system reactions, which aren’t the immediate reaction to danger.

Facing danger triggers the fight-or-flight response, a rapid, automatic adjustment by the autonomic nervous system. The brain perceives threat and signals the hypothalamus, which activates the sympathetic branch. Adrenal glands release adrenaline and noradrenaline, increasing heart rate and blood pressure, speeding up breathing, dilating pupils, and diverting blood to the muscles. This prepares the body to either fight or flee, providing quick energy via released glucose and heightened alertness. Once the danger passes, the parasympathetic system quiets these changes and the body returns to a rested state. If this response happens often or for long periods, it can contribute to stress-related health issues. The other terms describe calming responses (relaxation), normal rest-wake cycles (sleep cycle), or immune system reactions, which aren’t the immediate reaction to danger.