A) bundle of His
B) heart valves
C) sinoatrial node
D) atrio-ventricular node
Correct Answer: B
Solution :
The two sounds are produced by heart beat have been described in words as lubb dup. and their quality indicates the state of the valves. Damage to bicuspid or tricuspid valve effects the quality of the first heart sound ie., lubb. When the semilunar valves are injured, a soft hissing noise lubb shhh is heard in place of second sound ie, dup. This is called heart murmur.
You need to login to perform this action.
You will be redirected in
3 sec
