ELECTROCARDIOGRAM

Read the following statements (A – D ) (A) QRS complex in ECG indicates ventricular depolarization. (B) The electrocardiograph machine is used to obtain Electrocardiogram a (ECG ) on graph paper . (C) During a cardiac cycle , the left ventricular pumps out about 70 ml is of Oxygenated blood which is called the cardiac output . (D) The second heart sound is associated with the closure of the semilunar valves . How many statements from the above is /are incorrect ?

Read the following statements (A-D) A. Coronary Artery Disease is also called atherosclerosis that affects the vessels that supply blood to the heat muscle. B. The electrocardiogram (ECG) on graph paper. During a cardiac cycle , the right ventricle pumps out about 70ml of oxygenated blood which is called stroke volume. D. The second heart sound is associated with the closure of the semilunar valves. How many statements from the above is / are incorrect ?