respiratory dead space
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respiratory dead space
[′res·prə‚tȯr·ē ′ded ‚spās] (physiology)
That part of the respiratory system which has no alveoli and in which little or no exchange of gas between air and blood takes place.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.