Dorsal venous network of hand
Dorsal venous network of hand
The dorsal venous network of the hand is a complex network of veins located on the dorsum (back) of the hand. It is primarily responsible for the drainage of blood from the hand back to the heart.
Etymology[edit | edit source]
The term "dorsal" comes from the Latin word "dorsum" which means back. The term "venous" is derived from the Latin word "vena" which means vein. The term "network" is derived from the Old English word "netweorc" which refers to any interconnected system.
Anatomy[edit | edit source]
The dorsal venous network of the hand is formed by the confluence of the digital veins of the fingers. It drains into the cephalic vein and the basilic vein, which are the main veins of the arm. The network is located superficially, meaning it is close to the surface of the skin.
Function[edit | edit source]
The primary function of the dorsal venous network of the hand is to return deoxygenated blood from the hand to the heart. It also plays a role in thermoregulation, as the veins can constrict or dilate to help regulate body temperature.
Clinical significance[edit | edit source]
The dorsal venous network of the hand is often used for venipuncture (the process of drawing blood from the veins) due to its superficial location and easy accessibility. It is also used for the insertion of intravenous catheters for the administration of fluids and medications.
Related terms[edit | edit source]
- Dorsum: The back or posterior part of a structure.
- Digital veins: Veins that drain blood from the fingers.
- Cephalic vein: A major vein of the arm that drains into the axillary vein.
- Basilic vein: A large vein of the arm that helps drain the dorsal venous network of the hand.
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