T-wave in an electrocardiograph represents:

Excitation of the atria

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Depolarisation of the atria

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Repolarisation of the ventricles

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Depolarisation of the ventricles

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Solution

The correct option is C Repolarisation of the ventricles
The T-wave of an electrocardiograph represents the return of the ventricles from excited to normal state (repolarisation).
Excitation or depolarisation of the atria is represented by the P-wave.
Depolarisation of the ventricles is represented by the QRS complex.

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Similar questions

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. 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}

Which of the following electron configurations represents an atom of magnesium in an excited state?

Q. Read the following statements carefully.

(1)

In fishes the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart

(2)

The openings of the right and the left ventricles into the pulmonary artery and the aorta respectively are provided with the mitral valves.

(3)

The nodal musculature has the ability to generate action potential without any external stimuli, i.e., it is auto-excitable

(4)

The T-wave of ECG represents depolarization of the ventricles
Which of the given two statements are correct?

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

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