ife exists through the maintenance of a complex dynamic equilibrium, termed homeostasis, that is constantly challenged by internal or external adverse forces, termed stressors, which can be emotional or physical in nature. Thus, stress is defined as a state of threatened or
perceived by the individual as threatened homeostasis and it is re-established by a complex repertoire of behavioural and physiologic adaptive responses of the organism 1. Neuroendocrinic hormones have a crucial role in coordinating basic as well as threatened homeostasis; also, they intervene
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