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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «V»:

  1. Vein of Galen aneurysm Vein of Galen aneurysm
    Vein of Galen aneurysm: A congenital malformation of blood vessels of the brain. Specifically, an arteriovenous (AV) malformation in which blood shunts from cerebral arteries into a dilated vein of Galen (an internal cerebral vein). In newborns this shunt can cause high cardiac output and heart ...
  2. Vein, brachial Vein, brachial
    Vein, brachial: A vein that accompanies the brachial artery between the shoulder and the elbow. The route of the brachial artery is from the shoulder down to the elbow, whereas that of the brachial vein is in the reverse direction -- from the elbow back up to the shoulder. Veins often appear to acc...
  3. Vein, central retinal Vein, central retinal
    Vein, central retinal: The blood vessel that carries blood away from the retina of the eye. The counterpart to the central retinal vein is the central retinal artery, the vessel that carries blood into the eye and supplies nutrition to the retina....
  4. Vein, external jugular Vein, external jugular
    Vein, external jugular: The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from the outside ...
  5. Vein, femoral Vein, femoral
    Vein, femoral: See: Femoral vein....
  6. Vein, great saphenous Vein, great saphenous
    Vein, great saphenous: The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface). The great saphenous vein goes from the foot all the way up to the saphenous opening, an oval aperture in the broad fascia of the thigh, a fibrous membrane throug...
  7. Vein, hepatic Vein, hepatic
    Vein, hepatic: One of the veins which drains blood from the liver....
  8. Vein, inferior vena cava Vein, inferior vena cava
    Vein, inferior vena cava: A large vein that receives blood from the lower extremities, pelvis and abdomen and empties it into the right atrium of the heart....
  9. Vein, internal jugular Vein, internal jugular
    Vein, internal jugular: The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The internal jugular vein collects blood from the brain, the outside of the face and the neck. It runs down the inside of the neck outside the ...
  10. Vein, jugular Vein, jugular
    Vein, jugular: The jugular veins are in the neck and drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from the outside of the skull and the deep parts of the face. It lies outside the sternocleidomastoid muscle, pass...
  11. Vein, large saphenous Vein, large saphenous
    Vein, large saphenous: The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface). The large saphenous vein goes from the foot all the way up to the saphenous opening, an oval aperture in the broad fascia of the thigh, a fibrous membrane throug...
  12. Vein, mesenteric Vein, mesenteric
    Vein, mesenteric: One of the large veins which return blood from the intestines. The inferior (lower) mesenteric vein empties into the splenic vein. The superior (upper) mesenteric vein then joins the splenic vein to create the portal vein which goes to the liver....
  13. Vein, portal Vein, portal
    Vein, portal: A large vein that carries blood from the stomach and the intestines to the liver. The portal vein is formed by the union of the splenic and superior mesenteric veins. It conveys venous blood to the liver for detoxification before the blood is returned to the circulation via the h...
  14. Vein, pulmonary Vein, pulmonary
    Vein, pulmonary: One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. (The four are the right and left superior and inferior pulmonary veins). The pulmonary veins are the only veins that carry bright red oxygenated blood....
  15. Vein, saphenous Vein, saphenous
    Vein, saphenous: The saphenous veins -- there are two, the great and the small saphenous veins -- are the principal veins that run superficially (near the surface) up the leg. The great saphenous vein (also called the large saphenous vein) goes from the foot all the way up to the saphenous openi...