Arteries n Veins!

Arteries vs Veins: 

There are two types of blood vessels in the circulatory system of the body - arteries that carry oxygenated blood from the heart to various parts of the body; and veins that carry blood towards the heart for oxygenation.

Oxygen Concentration: 
A: Arteries carry oxygenated blood (with the exception of the pulmonary artery and umbilical artery).

V: Veins carry deoxygenated blood (with the exception of pulmonary veins and umbilical vein).

Types:
A: Pulmonary and systemic arteries.

V: Superficial veins, deep veins, pulmonary veins and systemic veins

Direction of Blood Flow:
A: From the heart to various parts of the body.
V: From various parts of the body to the heart.

Anatomy:
A: Thick, elastic muscle layer that can handle high pressure of the blood flowing through the arteries.

V: Thin, elastic muscle layer with semilunar valves that prevent the blood from flowing in the opposite direction.