Blood vessels

Blood vessels are intricate networks of tubes that transport blood throughout the entire body.

blood vessels
Image source: www.guidant.com

There are three varieties of blood vessels: arteries, veins, and capillaries. During blood circulation, the arteries carry blood away from the heart. The capillaries connect the arteries to veins and the veins carry the blood back to the heart.
Back to varicose veins

404