NHA CET EXAM PREP QUESTIONS AND ANSWERS. (GRADED A)

What is the primary pacemaker? - ANSWER-SA Node What is a more medically correct term for the clotting of an artery? - ANSWER-Occlusion When the Atria depolarize (or contract), what is shown on the EKG tracing? - ANSWER-P wave An irregular heartbeat that is common among children is called _____ _____. - ANSWER-Sinus Arrhythmia 1 sm box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters? - ANSWER-1 mm What is the term used to described the amount of blood pumped by the heart per minute? - ANSWER-Cardiac output Leads I to III are collectively known as - ANSWER-Standard leads Leads V1 to V6 are collectively known as - ANSWER-Precordial leads What is the main artery in the arterial system - ANSWER-Aorta aVr, aVl, and aVf are known as - ANSWER-Augmented leads Leg electrodes are only used for? - ANSWER-grounding What is the main vein in the venous system? - ANSWER-Superior vena cava