Which item is listed as a physical/external stressor?

Which item is listed as a physical/external stressor?

• A. Chronic pain
• B. Noise exposure
• C. Lack of sunlight
• D. Sleep deprivation

Answer: (D)

Understanding how stressors are categorized helps you see how different factors affect the body. A physical/external stressor is something in the environment or a behavior that disrupts the body's normal functioning and forces a physiological stress response. Sleep deprivation fits this well because it directly challenges the body's systems: it heightens stress hormone activity, impairs immune function, and disrupts energy metabolism and cognitive performance. Even though it can be caused by external factors, its primary impact is on physical processes, making it a clear physical/external stressor in this context. Chronic pain is more of an internal bodily condition signaling tissue or nerve activity rather than an external agent imposing the stress. Noise exposure is a classic external physical factor, but the question here emphasizes the broader, body-wide stress response associated with lack of sleep. Lack of sunlight is an environmental cue affecting circadian rhythms, but sleep deprivation more directly represents the kind of physiological load the category targets.

Understanding how stressors are categorized helps you see how different factors affect the body. A physical/external stressor is something in the environment or a behavior that disrupts the body's normal functioning and forces a physiological stress response.

Sleep deprivation fits this well because it directly challenges the body's systems: it heightens stress hormone activity, impairs immune function, and disrupts energy metabolism and cognitive performance. Even though it can be caused by external factors, its primary impact is on physical processes, making it a clear physical/external stressor in this context.

Chronic pain is more of an internal bodily condition signaling tissue or nerve activity rather than an external agent imposing the stress. Noise exposure is a classic external physical factor, but the question here emphasizes the broader, body-wide stress response associated with lack of sleep. Lack of sunlight is an environmental cue affecting circadian rhythms, but sleep deprivation more directly represents the kind of physiological load the category targets.