NEET 2019 Biology question
Match the Column-I with Column-II Column-I (a) P - wave (b) QRS complex (c) T - wave (d) Reduction in the size of T-wave Column-II (i) Depolarisation of ventricles (ii) Repolarisation of ventricles (iii) Coronary ischemia (iv) Depolarisation of atria (v) Repolarisation of atria Select the correct option.
Answer: (1)
Solution
In a standard ECG the P-wave represents depolarisation of the atria (a-iv), the QRS complex represents depolarisation of the ventricles (b-i), and the T-wave represents repolarisation of the ventricles, i.e. return of the ventricles from the excited to the normal
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