A cause of a heart murmur may be:
A) incomplete closing of a valve.
B) incomplete contraction of the atria.
C) narrowing of a valve (stenosis).
D) both A and C.

Question

Quizplus · Accepted Answer

Incomplete closing of a valve (option A) and narrowing of a valve (option C) are both common causes of heart murmurs. Incomplete contraction of the atria (option B) may contribute to certain types of murmurs, but it is not a major cause. Therefore, the best choice is D (both A and C).

A Cause of a Heart Murmur May Be