Question

Valves are located in which of the blood vessels to prevent the backflow of blood within the body?
Responses

All blood vessels have valves
All blood vessels have valves

Veins
Veins

Arteries
Arteries

Capillaries

Answer 1

Valves are primarily located in **veins** to prevent the backflow of blood. Veins carry blood back to the heart, and the valves help ensure that the blood flows in one direction, especially in the limbs where blood must travel against gravity. Arteries and capillaries do not have valves.