Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  •  QRS wave indicates  Option: 1 Repolarization of atria  <div

 QRS wave indicates

 

Option: 1

Repolarization of atria

 


Option: 2

Depolarization of ventricles

 


Option: 3

Depolarization of atria

 


Option: 4

Ventricular repolarization

 


Answers (1)

best_answer
 

As we have learnt in ECG:

QRS wave

  • It begins after a fraction of a second of the P wave 
  • It begins as a small downward deflection (Q) and continues as large upright (R)  and triangular wave, ending as downward wave (S) at its base
  •  QRS wave indicates depolarization of ventricles
  • It is caused by the impulses of the contraction from AV node through the Bundle of His and Purkinje fibres and the contraction of ventricular muscles
  • In this wave there is a spread of electrical impulses through ventricles
  • The normal duration of the QRS complex is <0.10 seconds

So,

QRS wave indicates depolarization of ventricles. Hence, the correct answer is option b.

Posted by

seema garhwal

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

BSc Nursing NEET cut-offs for AIQ seats, central universities; counselling process, fee details
anam-khan

NEET cut-off trends for MBBS in Tamil Nadu government, private medical colleges; counselling underway
anam-khan

NEET UG result 2025 withheld? Reasons, implications; here’s what to do

Latest Question