Question

The second heart sound is caused as a result of one of the following:
Closure of tricuspid and mitral valve.
Closure of aortic and pulmonic valves.
Closure of the pulmonic and mitral valve.
Closure of the aortic and tricuspid valve.

Answer 1

Answer:

The second one is the answer

Answer 2

First option is correct because mitral valve is also called bicuspid valve... so opening and closing of tricuspid and bicuspid valve... produces heart sound...