Physiologic reactions caused by sympathetic arousal from a stressor include what?

Physiologic reactions caused by sympathetic arousal from a stressor include what?

• A. Vasodilation of blood vessels to the skin
• B. Bronchodilation of the airways
• C. Reduction in blood pressure
• D. Increased digestive activity

Answer: (B)

The correct answer relates to the body's "fight or flight" response, which is activated by sympathetic arousal when faced with a stressor. When this system is triggered, it prepares the body to either confront or flee from a perceived threat. One significant physiological change that occurs during this response is bronchodilation of the airways. Bronchodilation is the widening of the air passages in the respiratory system, which allows for increased airflow to the lungs. This is crucial during stress because the body requires more oxygen to fuel muscles and other systems that may be activated in response to a threat. The increase in oxygen intake enhances physical performance, providing the energy necessary to respond to the stressor. The other options illustrate reactions that either do not occur during sympathetic arousal or counteract the body's immediate stress response. For instance, vasodilation of blood vessels to the skin does not align with the sympathetic response, as blood flow is redirected to vital organs and muscles rather than to the skin. Similarly, a reduction in blood pressure would be counterproductive in a stressful situation, and increased digestive activity is typically suppressed to conserve energy for more immediate physical demands. Thus, bronchodilation serves to optimize respiratory function during moments of stress, highlighting its importance in the body's overall

The correct answer relates to the body's "fight or flight" response, which is activated by sympathetic arousal when faced with a stressor. When this system is triggered, it prepares the body to either confront or flee from a perceived threat. One significant physiological change that occurs during this response is bronchodilation of the airways.

Bronchodilation is the widening of the air passages in the respiratory system, which allows for increased airflow to the lungs. This is crucial during stress because the body requires more oxygen to fuel muscles and other systems that may be activated in response to a threat. The increase in oxygen intake enhances physical performance, providing the energy necessary to respond to the stressor.

The other options illustrate reactions that either do not occur during sympathetic arousal or counteract the body's immediate stress response. For instance, vasodilation of blood vessels to the skin does not align with the sympathetic response, as blood flow is redirected to vital organs and muscles rather than to the skin. Similarly, a reduction in blood pressure would be counterproductive in a stressful situation, and increased digestive activity is typically suppressed to conserve energy for more immediate physical demands. Thus, bronchodilation serves to optimize respiratory function during moments of stress, highlighting its importance in the body's overall