superior vena cava

superior vena cava

noun, plural superior venae cavae.
See under vena cava.
Also called precava.


Origin:
1905–10

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an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Dictionary.com Unabridged

ve·na ca·va

[vee-nuh key-vuh]
noun, plural ve·nae ca·vae [vee-nee key-vee] . Anatomy.
either of two large veins discharging blood into the right atrium of the heart, one (superior vena cava or precava) conveying blood from the head, chest, and upper extremities and the other (inferior vena cava or postcava) conveying blood from all parts below the diaphragm.


Origin:
1590–1600; < Latin vēna cava hollow vein
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To superior vena cava
American Heritage
Medical Dictionary

superior vena cava n.
A large vein formed by the union of the two brachiocephalic veins and the azygos vein that receives blood from the head, neck, upper limbs, and chest, and empties into the right atrium of the heart. Also called precava.

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