Which physiological changes occur during alarm reaction?

Which physiological changes occur during alarm reaction?

• A. Heart Rate and Blood Pressure Rise
• B. Heart Rate Decreases
• C. No Change in Energy Levels
• D. Digestive System Slows Down

Answer: (A)

During alarm reaction, the body engages the sympathetic fight-or-flight response. Norepinephrine and adrenaline surge, causing the heart to beat faster and with more force, which raises both heart rate and blood pressure. This cardiovascular rise ensures more blood—and thus oxygen and glucose—reaches muscles and critical organs to prepare for quick action. While digestion slows and other systems adjust to conserve energy, the most direct and consistent change described in alarm reaction is the increase in heart rate and blood pressure, making that option the best choice. The other options either contradict the rapid cardiovascular activation or miss the primary, widely observed change.

During alarm reaction, the body engages the sympathetic fight-or-flight response. Norepinephrine and adrenaline surge, causing the heart to beat faster and with more force, which raises both heart rate and blood pressure. This cardiovascular rise ensures more blood—and thus oxygen and glucose—reaches muscles and critical organs to prepare for quick action. While digestion slows and other systems adjust to conserve energy, the most direct and consistent change described in alarm reaction is the increase in heart rate and blood pressure, making that option the best choice. The other options either contradict the rapid cardiovascular activation or miss the primary, widely observed change.