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

Differentiate between lub and dup sound.

Open in App
Solution

Lub and dup are heart sounds, heard during a heart beat by placing a stethoscope on the chest wall above the heart. However, lub is the first sound which is fairly loud and is due to the closure of the atrioventricular valves, whereas the dup is the second sound which is softer and is due to the closure of the aortic and pulmonary valves. The lub corresponds with ventricular systole whereas the dup with atrial systole.

flag
Suggest Corrections
thumbs-up
2
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Pulse, Cardiac Output And Blood Pressure
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon