ANATOMY

Detailed explanation-1: -Structures called valves are present in veins and lymph ducts but are absent in arteries. These valves mainly prevent the backflow of blood in the vessels. Due to the high pressure of blood flowing n the arteries, they do not require valves to prevent backflow of the blood.

Detailed explanation-2: -Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don’t require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity. Q.

Detailed explanation-3: -Arteries have no valves in their inner linings.