Increase heart rate, dilate bronchioles, decrease act. of glands and sm. muscle of digestive organs, constrict sphincter, increase release of glucose in liver, dilate pupil, change lens for distance vision, constrict most b.v. to increase blood pressure, decrease secretion of salivary glands, activate sweat glands, contract arrector pili, stimulates adrenal medulla to secrete epinephrine and nonepinephrine