Sometimes referred to even more tongue-twistingly as psychoneuroimmunoendocrinology, this new discipline is predicated on the unity between all our constituent parts: mind, brain, nervous and immune systems, and the hormonal apparatus (that’s the “endocrine” part). The pieces can be studied separately, but we cannot fully understand any of them without grasping the whole picture. From the cerebral cortex to the brain’s emotional nuclei to the autonomic nervous system, from the solid or fluid aspects of the immune apparatus to the hormonal organs and secretions, from the stress-response system
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