Question:
Identify the correct statements about ECG of a normal human being:
a) P-wave indicates atrial depolarization.
b) QRS complex indicates ventricular repolarization.
c) T-wave represents ventricular repolarization.
d) The interval between S and T represents the atrial systole.
Identify the correct statements about ECG of a normal human being:
a) P-wave indicates atrial depolarization.
b) QRS complex indicates ventricular repolarization.
c) T-wave represents ventricular repolarization.
d) The interval between S and T represents the atrial systole.
a) P-wave indicates atrial depolarization.
b) QRS complex indicates ventricular repolarization.
c) T-wave represents ventricular repolarization.
d) The interval between S and T represents the atrial systole.
Show Hint
Recall which wave stands for which event of the cardiac cycle.
Updated On: Nov 12, 2026
- a and c only
- b and c only
- a, b and d only
- a and d only
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
An ECG records the electrical events of the heart: P wave, QRS complex and T wave.
Step 2: Check each statement
(a) True: P wave is atrial depolarisation.\n(b) False: QRS shows ventricular depolarisation.\n(c) True: T wave is ventricular repolarisation.\n(d) False: the S-T segment is during ventricular contraction, not atrial systole.
Step 3: Conclusion
Only a and c are correct.
Final Answer:
Only a and c are correct. \[ \boxed{\text{(A) }\text{a and c only}} \]
An ECG records the electrical events of the heart: P wave, QRS complex and T wave.
Step 2: Check each statement
(a) True: P wave is atrial depolarisation.\n(b) False: QRS shows ventricular depolarisation.\n(c) True: T wave is ventricular repolarisation.\n(d) False: the S-T segment is during ventricular contraction, not atrial systole.
Step 3: Conclusion
Only a and c are correct.
Final Answer:
Only a and c are correct. \[ \boxed{\text{(A) }\text{a and c only}} \]
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