Anatomy
vein Audio
vein [ veyn ]
Subclass of:
Blood Vessel
Definitions related to veins:
  • A blood vessel that carries blood to the heart from tissues and organs in the body.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • A blood vessel that carries blood toward the heart.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • A vessel that carries blood back to the heart.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • Subdivision of venous tree (organ) which consists of branching sets of veins that form a tree; together with other venous trees (organ part), it constitutes a venous tree (organ). Examples: subclavian venous tree, jugular tree, extrahepatic portal tree, common iliac venous tree.
    Digital Anatomist
    University of Washington, 2003
  • Vessel carrying blood towards the heart.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The vessels carrying blood away from the CAPILLARY BEDS.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Vein, in human physiology, any of the vessels that, with four exceptions, carry oxygen-depleted blood to the right upper chamber (atrium) of the heart. The four exceptions--the pulmonary veins--transport oxygenated blood from the lungs to the left upper chamber of the heart. The oxygen-depleted blood...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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