Med Surg Exam 2 Nr 324 Questions And Answers

Echocardiogram {Ans: transducer that emits and receives ultrasound waves is placed in four positions on the chest above the heart. transducer records sound waves that are bounced off the heart}diastolic blood pressure (DBP) {Ans: the residual pressure in the arterial system during ventricular relaxation (or filling)}stimulation of the alpha (a)-adrenergic receptors {Ans: vasoconstriction the source of neural control of blood vessels is the sympathetic nervous system. decreased stimulation to alpha (a)-adrenergic receptors causes vasodilation}Preload {Ans: determines the amount of stretch placed on myocardial fibers}first heart sound, S1 {Ans: associated with closure of the tricuspid and mitral valves}____ prevent blood from regurgitating into the ventricles at the end of each ventricular contraction {Ans: The pulmonic and aortic valves (also known as semilunar valves)}