Differences between Artery and Vein

There are two types of blood vessels in the circulatory system of the body. They are:
Arteries: that carry oxygenated blood from the heart to various parts of the body.
Veins: that carry deoxygenated blood towards the heart.

Artery vs Vein

S.N.   Characters   Artery   Vein
1   Direction of blood flow   Carry blood away from heart to various parts of the body.   Carry blood from the various parts of the body towards the heart.
2   Wall   Thick walled so do not collapse when cut or after death. Also more elastic.   Thin walled and collapse when cut or after death.
Are less elastic.
3   Tunica externa   Less developed and less strong.   More developed and more strong.
4   Tunica media   More muscular.   Less muscular.
5   Tunica interna   Endothelial cells more elongated.   Endothelial cells less elongated.
6   Types   Pulmonary and Systemic artery.   Superficial veins, deep veins, pulmonary veins and systemic veins.
7   Lumen   Narrow.   Wide.
8   Layer of Muscle tissue   Thicker to support the high pressure of blood.   Relatively thin.
9   Nature of blood   Oxygenated except pulmonary artery.   De-oxygenated except pulmonary veins.
10   Position   Deep seated except wrist, neck, etc.   Superficial.
11   Color   Red.   Blue.
12   Blood pressure   More (generally 120/80 mm of Hg).   Less.
13   Valves   No valves   Valves are present that prevent back flow of blood.
14   Amount of blood   About 15%.   About 65%.
15   Movement   Spurty movement of blood.   Sluggish movement of blood.
16   Pulse   Detectable.   No detectable.
17   Contraction of muscle   Present.   Absent.
18   Disease   Atherosclerosis.   Deep vein thrombosis.