Anatomy
vein
vein [ veyn ]
Subclass of:
Blood Vessel
Etymology:
Latin vena = vein
Definitions related to veins:
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A blood vessel that carries blood to the heart from tissues and organs in the body.NCI Dictionary of Cancer TermsU.S. National Cancer Institute, 2021
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A blood vessel that carries blood toward the heart.NCI ThesaurusU.S. National Cancer Institute, 2021
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A vessel that carries blood back to the heart.Harvard Dictionary of Health TermsHarvard Medical Publishing, 2011
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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 AnatomistUniversity of Washington, 2003
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Vessel carrying blood towards the heart.CRISP ThesaurusNational Institutes of Health, 2006
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The vessels carrying blood away from the CAPILLARY BEDS.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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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, Inc., 2020
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