Ex Phys Home
Class, note how the sympathetic-like effect of epinephrine and norepinephrine is to increase all metabolic and physiological variables, preparing the body for the demands of exercise.
Aldosterone is very involved in electroylte balance of Na+ and K+ during exercise.
Cortisol may inhibit protein synthesis if the body is low in glucose (carbohydrates). In the graphic above, the body is low on glucose. You see how cortisol is transporting amino acids in muscle (that were suposed to be used for protein synthesis) to the liver. These amino acids (from muscle) will be utilized in the liver to make new glucose, referred to as gluconeogenesis. Thus, because cortisol is taking amino acids AWAY from muscle, when the body is low in glucose, we say 'Cortisol may inhibit protein synthesis' if the body is low in glucose (carbohydrates).