Biology Circulation / Transport ETEA 2017
PMDC Verified Question 45 of 54
In ECG, QRS complex represent:
A
Atrial systole
B
Atrial diastole
C
Ventricle systole
D
Ventricle diastole
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Ventricle systole
Concept:

An electrocardiogram (ECG) traces the electrical depolarization and repolarization waves across the heart muscle.

Formula:

None

Solution:

  • The P-wave represents atrial depolarization.


  • The QRS complex represents the rapid depolarization of the large ventricular muscle mass.


  • This ventricular depolarization immediately triggers ventricular contraction, clinically known as ventricle systole.


Why other options are incorrect:

  • Atrial repolarization (diastole) is masked by the massive QRS complex.


  • Ventricle diastole corresponds to the T-wave (ventricular repolarization).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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