NPB 110 Lecture Notes - Lecture 15: Adrenal Medulla, Triglyceride, Anterior Pituitary
3 Apr 2021
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Stress : the non - specific response of the body to any demand for change. All stressors cause similar . integrated pattern of responses. Body expends resources to confront the threat. Resistance phase : body actively confronting threat and resistance man. " if threat continues and body cannot maintain resistance then exhaustion occurs. Inverted u model of stress adaptation mat- adaptive stress. " the adrenal gland is a key player in the integrated response to stress. Adrenal medulla releases catecholamines (epinephrine and norepinephrine ) in response to sns activation by hypothalamus and brainstem. Integrated sns and epinephrine - mediated stress response. T liver and muscle glycogen 014815 , minor effect on gluconeogenesis to t blood glucose levels. Glycerol for gluconeogenesis and fatty acids for oxidation. Glucose levels can be sensed centrally by glucose receptors in the cns. Activates sns which increases fuel production in the liver and adipose tissue. Adrenal cortex releases aldosterone in response to renin - angiotensin system.
