Question
In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?
R-repolarisation of ventricles
S-start of systole
T-end of diastole
P-depolarisation of the atria
According to the sources, a standard electrocardiogram (ECG) identifies specific peaks with letters from P to T. The P-wave represents the electrical excitation, or depolarisation, of the atria, which leads to their contraction . The QRS complex represents the depolarisation of the ventricles, while the T-wave represents ventricular repolarisation (the return to a normal state) and marks the end of systole . Mastering these wave interpretations is a high-priority strategy for medical aspirants, as approximately 95% of NEET Biology questions are derived directly from the NCERT textbooks .
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Body Fluids and Circulation. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
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