Difference between Arteries and Veins

S.N.	Characteristics	Arteries	Veins
1.	Blood Circulation	Arteries carry blood away from the heart to the tissues of the body.	Veins carry blood from the tissues of the body back to the heart.
2.	Blood Type	Arteries carry oxygenated blood except pulmonary artery.	Veins carry deoxygenated blood except pulmonary vein.
3.	Thickness	Arteries have thick elastic muscular walls.	Veins have thin non elastic less muscular walls.
4.	Position	Arteries are usually positioned deeper within the body.	Veins are usually positioned closer beneath the surface of the skin.
5.	Valves	Valves are absent.	Valves are present.
6.	Lumen	These possess narrow lumen.	These possess wide lumen
7.	Pressure	Blood flows under high pressure.	Blood flows under low pressure.
8.	Color	These are reddish in color.	These are bluish in color.
9.	Types	Pulmonary and systemic arteries.	Superficial veins, deep veins, pulmonary veins and systemic veins.
10.	Internal Diameter	Narrower (4mm)	Wider (5mm)
11.	Volume	Low (15%)	High (65%)
12.	Movement	These show spurty movement of blood giving pulse.	These show sluggish movement of blood.
13.	Pulse	Pulse is detectable in the arteries.	Pulse not detectable in the veins.
14.	Walls	Arterial walls are more rigid.	Veins have collapsible walls.
15.	Thickest layer	Tunica media	Tunica adventitia
16.	Time of Death	Arteries empty up at the time of death.	Veins get filled up at time of death.
17.	Oxygen level	Oxygen levels is quite high in arterial blood.	Oxygen level is low comparatively.
18.	Carbon-dioxide level	CO2 level is low in arterial blood.	CO2 level is high in venous blood.
19.	Injury to the Blood Vessel	Squirting blood	Pooling of blood
20.	Contraction of muscle	Present	Absent
21.	Diseases	Atherosclerosis, Angina Pectoris, Artherogenesis- myocardial ischemia.	Deep vein thrombosis, varicose veins.