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Body Fluids and Its Circulation question

2011 · Q15
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Body Fluids and Its Circulation question

2011 · Q15

NEETBiologyBody Fluids and Its CirculationMCQ+4 / −1
Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?
AIPMT 2011 Mains Biology - Body Fluids and Its Circulation Question 50 English
  1. A
    Complex QRX - one complete pulse
  2. B
    Peak T - initiation of total cardiac contraction
  3. C
    Peak P and peak R together - systolic and diastolic blood pressures
  4. D
    Peak P- initiation of left atrial contraction only
View written solutionFree

Correct answer: A

By counting the number of QRS complexes that occur in a given time period, one can determine the heart beat rate (pulse) of an individual. The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction.

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