In terms of short-term goals, the stress response initiated by a particular stressor provides a series of homeostatic mechanisms as well as behavioral and physiological adaptations. On the other hand, allostasis enables an organism to maintain physiological and behavioral stability despite adverse and fluctuating environmental conditions. The responses to stress involve numerous endocrine and neural systems that contribute to orchestrating defenses that enable the animal to adapt and maintain behavioral and physiological stability. Behavioral and physiological processes work in conjunction to regulate the viability of the internal milieu. During acute stress, the biological cost to an animal is minimal, but maximal during chronic stress. The inability to initiate an appropriate and adequate stress response can be highly deleterious, thus affecting health and reproduction, which in turn impacts survivability and well-being.
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