Class 21 Stress 2 upload

Class 21 Stress 2 upload - Stress 2: Short- and long-term...

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Stress 2: Short- and long-term November 18, 2008
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Outline Endocrine system Short and long term stress Biological bases Hormones Adaptive Advantages Maladaptive Consequences Heart disease Type 2 diabetes
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Global effects of Stress
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Some definitions of steroids There is much information in the name. For example, “glucocorticoid” “Gluco” refers to glucose metabolism “Corti” refers to the cortex of some organ The suffix “oid” refers to steroids So, glucocorticoid is a steroid hormone released by the adrenal cortex and is involved in glucose metabolism. Conversely, a mineral corticoid is a steroid from the adrenal cortex involved in ionic balance.
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The Endocrine System The hypothalamus controls the pituitary gland that releases the hormones that control the other endocrine glands. For “Stress” we will talk about the Adrenal glands (epinephrine and corticosteroids).
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Adrenalin vs Epinephrine Both words come from upon the kidney Adrenalin (Latin) ad renal Epinephrine (Greek) epi nephros Norepinephrine is a hormone that is not from the gland upon the kidney.
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Stress Response Its not stress that kills us, it is our reaction to it. - Hans Selye Avoidance behavior Increased vigilance and arousal Activation of the Sympathetic division of the Autonomic Nervous System HPA axis and the release of cortisol from the adrenal glands
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fear, stress and emotion Amygdala is a crucial sensory input way for emotionally charged stimuli – activates stress response. Hippocampus reduces stress response. But this regulation may fail in constant stress; leading to loss of hippocampus cells. Postraumatic stress
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This note was uploaded on 07/15/2009 for the course BIO 208 taught by Professor Lorne-mendell,s during the Fall '08 term at SUNY Stony Brook.

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Class 21 Stress 2 upload - Stress 2: Short- and long-term...

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