Question

The heart sounds are caused by:

A.movement of blood through the chambers
B.contraction of the muscles
C.blood flowing into the aorta
D.the snapping shut of the valves

Answer 1

Answer is A

Step-by-step explanation:

Heart sounds are created from blood flowing through the heart chambers as the cardiac valves open and close during the cardiac cycle. Vibrations of these structures from the blood flow create audible sounds — the more turbulent the blood flow, the more vibrations that get created.

Answer 2

a

Step-by-step explanation:

the blood move through the chambers