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NEET Biology question

BiologyBody Fluids and CirculationNEET

Which of the following sentences is correct? I. ECG is of a great clinical significance II. Electrocardiograph is the recording of electrical changes during the cardiac cycle III. To obtain a standard ECG, a patient is connected to the machine with 3 electrical electrodes (one to each wrist and to the left ankle) IV. Normal activities of the heart are regulated intrinsically V. Electrocardiogram is the electrical activity of heart The option with correct statements is

Answer: (B)

Solution

Statement II wrongly defines the electrocardiograph, which is the instrument that produces the trace, as if it were itself "the recording"; it is the electrocardiogram that is the actual recording of the heart's electrical changes, so II is false, while I (ECG has great clinical significance), III (a

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Question ID VK-116155