Catecholamines
A)are secreted by the adrenal cortex
B)reinforce the activities promoted by the parasympathetic nervous system
C)are important in the maintenance of blood pressure
D)promote glycogen storage
E)are secreted in response to hypothalamic stimulation

Question

Quizplus · Accepted Answer

Catecholamines, such as adrenaline and noradrenaline, are important in the maintenance of blood pressure as they increase heart rate and contractility, and cause vasoconstriction. They are secreted by the adrenal medulla in response to sympathetic nervous system stimulation, not the adrenal cortex or parasympathetic system. They promote glycogen breakdown, not storage.