Figure 8. The stress response involves release of neuroendocrine hormones and cytokines that may lead to detrimental physiologic responses. ACTH = adrenocorticotropic hormone; ADH = antidiuretic hormone; GH = growth hormone; TSH = thyroid-stimulating hormone; IL2 = interleukin 2; IL6 = interleukin 6; TNF = tumor necrosis factor.