Vein - Classification

Classification

Veins are classified in a number of ways, including superficial vs. deep, pulmonary vs. systemic, and large vs. small.

Superficial veins
Superficial veins are those whose course is close to the surface of the body, and have no corresponding arteries.
Deep veins
Deep veins are deeper in the body and have corresponding arteries.
Communicating veins
Communicating veins (or perforator veins) are veins that directly connect superficial veins to deep veins.
Pulmonary veins
The pulmonary veins are a set of veins that deliver oxygenated blood from the lungs to the heart.
Systemic veins
Systemic veins drain the tissues of the body and deliver deoxygenated blood to the heart.

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