the effects on the blood pressure and heart rate responses of different adrenergic stimulants ( norepinephrine , sympathomim , epinephrine and isoproterenol ) and blocking agents ( phenoxybenzamine and propranolol ) were studied in control ( n=55 ) and exercising ( n=52 ) albino rats under anaesthesia .
C0028351
norepinephrine
C0014563
epinephrine