Venoconstriction ________ the amount of blood within the venous system, which ________ the volume in the arterial and capillary systems.
A) doubles; decreases
B) reduces; increases
C) decreases; doubles
D) increases; reduces
E) none of the above

Question

Quizplus · Accepted Answer

Venoconstriction reduces the amount of blood within the venous system, which leads to a decrease in the volume in the arterial and capillary systems. This is because when veins constrict, the blood is squeezed out of the veins and delivered to the heart, which then pumps it into the arteries and capillaries. Thus, venoconstriction reduces the volume of blood in the veins and increases the volume in the arteries and capillaries. Choice B correctly describes this relationship.

Venoconstriction ________ the Amount of Blood Within the Venous System