Which one is correct about ECG?

P-wave - Depolarisation of atria

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QRS complex - Repolarisation of ventricles

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T-wave - Start of systole

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T-wave - End of diastole

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Solution

The correct option is A P-wave - Depolarisation of atria
ECG consists of three components: P-wave, a QRS complex, and a T-wave.
The P-wave represents the beginning of the atrial contraction (atrial depolarisation).
The QRS complex represents ventricular contraction (ventricular depolarisation) and the T wave represents ventricular relaxation (ventricular repolarisation).
The end of the T wave marks the end of the systole.

Hence, the correct answer is option A, i.e., P wave - depolarisation of atria.

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Similar questions

Q. Match the following:

\begin{matrix} A. P wave & i) depolarisation of atria B. T wave & ii) repolarisation of ventricles C. QRS wave & iii) depolarisation of ventricles \end{matrix}

Q. Match the Column - I with Column - II.

	Column I		Column II
A	P-wave	1	Depolarisation of ventricles
B	QRS complex	2	Repolarisation of ventricles
C	T-wave	3	Coronary ischemia
D	Inversion of T-wave	4	Depolarisation of atria
		5	Repolarisation of atria

Q. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the waves are not represented. Which wave is that? Explain.

ECG depicts the depolarisation and repolarisation process during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
(a) Depolarisation of atria
(b) Repolarisation of atria
(c) Depolarisation of ventricles
(d) Repolarisation of ventricles

Q. ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

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