Stress Response

Stress Response - b) Hypothalamus releases releasing...

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AP Biology Stress Response - Stress response is controlled by adrenal gland - There are two different types of stresses: short-term stress and long-term stress - Depending on the type of stress, different regions of adrenal gland responds 1) Short-term Stress Response a) Controlled by adrenal medulla, synapsed with nerve cells from hypothalamus b) Adrenal glands release two catecholamines: epinephrine (adrenaline) and norepinephrine; they are derived from amino acids c) These are the effects of these two hormones Glycogen broken down to glucose; increased blood glucose Increased heart pressure, breathing rate, and metabolic rate Increased alertness and decreased digestive activity 2) Long-term Stress Response a) Controlled by hypothalamus
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Unformatted text preview: b) Hypothalamus releases releasing hormones to the anterior pituitary gland c) These releasing factors stimulate ACTH to the adrenal cortex d) ACTH stimulates mineralocorticoids and glucocorticoids from adrenal cortex e) These two hormones are derived from cholesterol; steroids f) These are the effects of mineralocorticoids Retention of sodium ions and water by kidneys Increased blood volume and pressure g) These are the effects of glucocorticoids Non-carbohydrate energy sources (fats and proteins) are converted to glucose Suppression of immune system ** Since amines and peptides are appropriate for short-term response, they are used for short-term response and vice versa...
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This note was uploaded on 02/11/2012 for the course ZOOLOGY 152 taught by Professor Stephengammie during the Fall '11 term at Wisconsin.

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