ELECTROCARDIOGRAPH (ECG)

Expand the terms EEG and ECG.

Cardiac Cycle and ECG

ECG records

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 ?

The recording (ECG) of the heart activity is taken by the machine

Which of the following is the diagrammatic representation of standard electrocardiogram (ECG) ?

Statement A : ECG represents electrical activity of heart during a cardiac cycle. Statement B : Electrocardiograph is obtained using electrocardiogram machine.