BIOL-242 Lecture Notes - Lecture 4: Buffalo Hump, Aldosterone, Glucocorticoid
16 Apr 2020
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Document Summary
Aldosterone makes blood volume high because it retains more salt. Released in response to acth, patterns of eating and activity, and stress. Prime metabolic effect is gluconeogenesis - formation of glucose from fats and proteins. Promotes rises in blood glucose, fatty acids, and amino acids. Cortisol is released when under stress, spontaneously. Any of these molecules released are helpful in building new structures. Enhances vasoconstriction rise in blood pressure to quickly distribute nutrients to cells. Depresses cartilage/bone formation and immune system; inhibits inflammation; disrupts neural, cardiovascular, and gastrointestinal function. Causes: tumor on pituitary, lungs, pancreas, kidney, or adrenal cortex; overuse of corticosteroids. Signs: moon face and buffalo hump in neck. Most weak androgens (male sex hormones) converted to testosterone. Hypothalamus crh acth adrenal cortex creased mineralocorticoids and glycogen. Adrenal medulla (secretes amino acid based hormones) creates catecholamines (epinephrine and norepinephrine) Motor neurons (cuz they go from central nervous system to adrenal medulla) visceral organs.
