NEET · Biology · STD 11 - 15. Body fluids and criculations
Match List \(I\) with List \(II\).
| List \(I\) | List \(II\) |
| \(A\). \(P\)-wave | \(I\). Beginning of systole |
| \(B\). \(Q\)-wave | \(II\). Repolarisation of ventricles |
| \(C\). \(QRS\) complex | \(III\). Depolarisation of atria |
| \(D\). \(T\)-wave | \(IV\). Depolarisation of ventricles |
- A A-I, B-II, C-III, D-IV
- B A-III, B-I, C-IV, D-II
- C A-IV, B-III, C-II, D-I
- D A-II, B-IV, C-I, D-III
Answer & Solution
Correct Answer
(B) A-III, B-I, C-IV, D-II
Step-by-step Solution
Detailed explanation
The correct answer is option (2) as in a standard ECG, P-wave represents the electrical excitation (or depolarisation) of the atria which leads to the contraction of both the atria. - QRS complex represents the depolarisation of ventricles which initiates the ventricular contraction.
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