stress
Sign in to saveorganism's response to a stressor such as an environmental condition or a stimulus
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Stress is your body's reaction to a challenge or change in your environment, like a difficult situation or physical demand. It matters because how your body responds to these challenges can affect your health and well-being.
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Article
Schematic overview of the classes of stresses in plants Neurohormonal response to stress Stress, whether physiological, biological or psychological, is an organism's response to a stressor, such as an environmental condition or change in life circumstances. When stressed by stimuli that alter an organism's environment, multiple systems respond across the body. In humans and most mammals, the autonomic nervous system and hypothalamic-pituitary-adrenal (HPA) axis are the two major systems that respond to stress. Two well-known hormones that humans produce during stressful situations are adrenaline and cortisol.
The sympathoadrenal medullary axis (SAM) may activate the fight-or-flight response through the sympathetic nervous system, which dedicates energy to more relevant bodily systems to acute adaptation to stress, while the parasympathetic nervous system returns the body to homeostasis.