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accessory hemiazygos vein

 - 2 dictionary results
Medical Dictionary

Main Entry: accessory hemiazygos vein
Function: noun
: a vein that drains the upper left side of the thoracic wall, descends along the left side of the spinal column, andempties into the azygos or hemiazygos veins near the middle of the thorax
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

accessory hemiazygos vein n.
A vein that is formed by the union of the fourth to seventh left posterior intercostal veins, passes along the fifth, sixth, and seventh thoracic vertebrae, crosses the midline behind the aorta, esophagus, and thoracic duct, and empties into the azygos vein.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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