Difference between Arteries and 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 expect 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.

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