Difference between Veins and Capillaries
No. |
Veins |
Capillaries |
1. | Veins help to carry blood towards the heart of the body. | Capillaries are the link or connection between vein and artery. |
2. | Semi lunar valves are present in the veins and they prevents back flow of the blood. | Semi lunar valves are absent in the capillaries. |
3. | Blood pressure in the veins is low. | Blood pressure in the capillaries is falling. |
4. | Outer and middle coat are present in the veins and are thin. | Outer and middle coat are absent in the capillaries. |
5. | Valves are present in the veins. | Valves are absent in the capillaries. |
6. | Diameter of lumen of veins is wide. | Diameter of lumen of capillaries is extremely narrow. |
7. | Layers in the walls of the veins are of three types and it includes tunica adventitia, tunica media and tunica intima. | Layers in the walls of the capillaries is only one type and it is tunica intima. |
8. | Small amount of muscle and elastic fibres are there, | No muscles and elastic fibre is included. |