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Encyclopedia > Vena comitans
The deep veins of the upper extremity. (Venae comites labeled at upper right.)

Vena comitans is Latin for accompanying vein. It refers to a vein that is usually paired, with both veins lying on the sides of an artery. Because they are generally found in pairs, they are often referred to by their plural form: venae comitantes. Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ...


Venae comitantes are usually found with certain smaller arteries, especially those in the extremities. Larger arteries, on the other hand, generally do not have venae comitantes. They usually have a single, similarly sized vein which is not as intimately associated with the artery.


Examples of arteries and their venae comitantes:

Examples of arteries that do NOT have venae comitantes (i.e. those that have "regular" veins): In human anatomy, the radial artery is the main blood vessel, with oxygenated blood, of the lateral aspect of the forearm. ... In anatomy, the radial veins are venae comitantes that accompany the radial artery through the back of the hand and the lateral aspect of the forearm. ... The ulnar artery is the main blood vessel, with oxygenated blood, of the medial aspect of the forearm. ... In anatomy, the ulnar veins are venae comitantes for the ulnar artery. ... The brachial artery is a blood vessel of the upper arm. ... In human anatomy, the brachial veins are venae comitantes of the brachial artery in the arm proper. ...

In human anatomy, the axillary artery is a large blood vessel that conveys oxygenated blood to the lateral aspect of the thorax, the axilla (armpit) and the upper limb. ... Anterior view of right upper limb and thorax - axillary vein and the distal part of the basilic vein and cephalic vein. ... The subclavian artery is a major artery of the upper thorax that mainly supplies blood to the head and arms. ... The subclavian vein is a continuation of the axillary vein and runs from the outer border of the first rib to the medial border of anterior scalene muscle. ...

External links

  • Gray's page #641
  • Photo of Venae comitantes of the brachial artery

 
 

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