Heart sound which is longer is

Question

Heart sound which is longer is (A) lub (B) dup (C) both equal (D) sometimes (a) and sometimes (b)

Tardigrade Admin · Accepted Answer

The first heart sound (lub) is caused by sudden closure of bicuspid and tricuspid valves and is longer than the second heart sound (dup) which is caused by closure of semilunar valves.

Q. Heart sound which is longer is

lub

dup

both equal

sometimes (a) and sometimes (b)

The first heart sound (lub) is caused by sudden closure of bicuspid and tricuspid valves and is longer than the second heart sound (dup) which is caused by closure of semilunar valves.