Function of the Veins and Venules
The veins transport deoxygenated blood from the body, back towards the heart.
The only exception is the pulmonary vein which being oxygenated blood from the lungs in to the left atrium.
The venules have the same function as the veins.
Structure of the Veins and Venules
- 3 cells thick
- Contain pocket valves to prevent backflow
- Have a thin layer of muscle
- Has a large lumen