What summarises the actions of the sympathetic nervous system during stress?

The response of the sympathetic nervous system under stress is best summarized by the "Fight or Flight" mechanism. This describes how, in response to perceived threats or stressors, the body prepares to either confront the danger (fight) or evade it (flight).

During this process, the sympathetic nervous system triggers a series of physiological changes. These include an increase in heart rate, dilation of the airways, and enhanced blood flow to the muscles, all aimed at providing the body with the energy and readiness needed to respond to a stressful situation. Stress hormones like adrenaline are released, further heightening the body's alertness and ability to perform physical activities.

In contrast, terms like "Rest and digest," "Relax and recover," and "Restore and refresh," refer to the functions of the parasympathetic nervous system, which is responsible for promoting relaxation and conserving energy after stressful situations have passed. These phrases highlight processes that occur when the body is calm and functioning in a state of homeostasis, rather than in response to stress.