Adrenergics and Adrenergic Blockers I. Adrenergics A. Function: Adrenergics Adrenergic agonists sympathomimetics
stimulate SNS
B. Effects of Adrenergics at receptor sites :
Beta1 receptor
Heart
Kidney
Increased heart contraction
Increased renin secretion
Increased heart rate
Increased angiotensin
Increased blood pressure
Beta2 receptor
Smooth muscle ( gastrointestinal tract )
Lungs
Uterus
Activation of glycogenolysis
Bronchodilation Decreased gastrointestinal tone and motility
Liver
Relaxation of uterine smooth muscle Increased blood sugar