First slide

Circulatory Pathways

Question

The doctors use a stethoscope to listen to heart sounds. The second heart sound (dub) is heard when the

Easy

A

Semilunar valves close
B

Atrioventricular valves open
C

Semilunar valves open
D

Atrioventricular valves close

Solution

The second heart sound (dub) is associated with the closure of the semilunar valves.
The first sound is associated with the closure of AV valves.

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