A) just between the atria and the ventricles.
B) just between the ventricles and the arteries.
C) just between the great veins and the atria.
D) between atria and ventricles and between ventricles and arteries.
E) just between the right and left ventricles.

A) provide sounds so that heart health can be monitored.
B) ensure that blood flows in one direction.
C) prevent blood from flowing too quickly.
D) regulate blood pressure.
E) provide the force for circulation.

A) increased blood volume
B) decreased vessel diameter
C) increased blood pressure
D) decreased peripheral resistance
E) relaxation of precapillary sphincters