Immune system
by Tyler Bender
1. The immune system is like a small police force that constantly patrols every organ and tissue in your body. It works closely with the circulatory system for transportation needs and the lymphatic system for production of lymphocytes. ... Your skin is usually the first defense your body has against disease.
2. Recent evidence indicates that the behavioral, nervous system, and neuroendocrine responses to stress are mediated by hypothalamic CRF, which acts on both the sympathetic nervous system and the HPA axis, resulting in increased levels of corticosteroids, catecholamines, and certain opiates, substances which are generally immunosuppressive.
