Medca Ekg Practice Questions Study Guide Questions And Correct Answers

The body returns oxygen-poor blood to the heart via the {Ans: vena cavae}Deoxygenated blood from the body returns to the heart, entering the {Ans: right atrium}(True or False) ECG can be used to evaluate the function of the artificial pacemakers {Ans: true}What causes sinus bradycardia {Ans: dysfunction of the sinoatrial node; when the sinoatrial node fires less than less than 60}Neurological pathways connect the heart with the __________ of the brain {Ans: medulla}The heart is made up of specialized muscle tissue called {Ans: myocardium}The right and left atrium are the __________chambers {Ans: receiving}The QRS complex represents {Ans: contraction of the ventricles}What position should the patient be in for an ECG {Ans: supine}The left ventricle pumps oxygen-rich blood through the aortic valve to the {Ans: tissues all over the body}Systole is when the heart muscle {Ans: contracts}The augmented leads are {Ans: unipolar}The precordial leads include {Ans: leads V1 to V6}The ECG tracing should be performed in a quiet environment because {Ans: interference is minimized}The hardest working chamber if the heart is the {Ans: left ventricle}The contraction of the heart muscle is cause by the flow of