Question

Identify the physiological responses of experimental rats after they were exposed to a variety of stressors in Hans Selye's study. (Check all that apply.)

Answer 1

Experiments in rats that were exposed to severe insults/ stressors, but his idea about a 'nonspecific bodily response' originated from his observations of sick patients whom he had seen as a medical student and young clinician. Autopsy of stressed rats revealed three major, grossly visible changes: hypermedia and enlargement of the adrenals, atrophy of the thymus and lymph nodes as well as hemorrhagic gastric erosion/ulcers

What is the physiological response to stress?

Physiological reaction includes increased heart rate. Adrenaline leads to the arousal of the sympathetic nervous system and reduced activity in the parasympathetic nervous system. Adrenaline creates changes in the body such as decreases (in digestion) and increases sweating, increased pulse and blood pressure.

What did Hans Selye say about stress?

The term “stress”, as it is currently used was coined by Hans Selye in 1936, who defined it as “the non-specific response of the body to any demand for change”.

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