Human Circulatory System
The QRS complex in a standard ECG represents:
QRS Complex
Select the correct option:
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About This Question
- Subject
- biology
- Chapter
- body fluids and circulation
- Topic
- human circulatory system
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Depolarisation of ventricles
- P-wave: Represents atrial depolarisation (contraction of the atria).
- QRS Complex: Represents ventricular depolarisation, which marks the start of ventricular contraction (systole).
- T-wave: Represents ventricular repolarisation (recovery/relaxation).
- Conclusion: The QRS complex specifically corresponds to the depolarisation of the ventricles.
This easy difficulty biology question is from the chapter body fluids and circulation, covering the topic of human circulatory system. It appeared in the 2025 exam.
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