wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

At which point of ECG, the initiation of ventricular contraction is marked by

A
P
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Q
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
T
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
S
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B Q
The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.

The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction. The contraction starts shortly after Q and marks the beginning of the systole.

The T-wave represents the return of the ventricles from excited to normal state (repolarisation). The end of the T-wave marks the end of systole.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Conducting System of the Heart
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon