The underlying biological mechanisms that contribute to a particular phenomenon or process. In this context, it refers to understanding how emotions are influenced by the physical workings of the body, particularly the brain and nervous system.
Chemical messengers produced by glands in the endocrine system that regulate various bodily functions and can impact emotions.
Fight-or-flight Response: The body's automatic response to a perceived threat or danger, involving physiological changes like increased heart rate and heightened alertness.