sinus of vena cava


n.

The portion of the cavity of the right atrium of the heart that receives the blood from the venae cavae and is separated from the rest of the atrium by the terminal crest.

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