Examlex
A heritability coefficient estimates the extent to which differences within an individual reflect heredity.
General Adaptation Syndrome
A three-stage response (alarm, resistance, exhaustion) that the body goes through when under stress, as proposed by Hans Selye.
Alarm Stage
The initial reaction of the body's stress response system, involving activation of the sympathetic nervous system to prepare to face or flee from a threat.
Sympathetic Nervous System
A part of the autonomic nervous system that activates the body's responses under stress, triggering the fight-or-flight response.
Parasympathetic Nervous System
The part of the autonomic nervous system responsible for conservation of energy and relaxation of the body, often referred to as the "rest and digest" system.
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