Key Differences Between Arteries and Veins

Functional Differences: Oxygenated vs. Deoxygenated Blood Transport

Arteries and veins are essential components of the circulatory system, each serving distinct roles in blood transportation.

Arteries

• Transport oxygen-rich blood from the heart to various body tissues.
• Have thick, elastic walls to withstand high-pressure blood flow.
• Do not contain valves as blood is propelled forcefully by the heart.

Veins

• Carry deoxygenated blood from tissues back to the heart for reoxygenation.
• Possess thinner walls and larger lumens due to lower pressure.
• Feature valves to prevent backflow of blood.

Structural and Functional Variations

Arteries are more resilient due to their muscular and elastic walls, ensuring efficient blood circulation under high pressure. In contrast, veins rely on muscle contractions and valves to assist in returning blood to the heart against gravity.