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Radiographic Comparison of Human Lung Shape During Normal Gravity and WeightlessnessChest radiographs in five seated normal volunteers at 1 G and 0 G were made with a view toward comparing human lung shape during normal gravity and weightlessness. Lung shape was assessed by measuring lung heights and widths in upper, middle and lower lung regions. No significant differences were found between any of the 1-G and 0-G measurements, although there was a slight tendency for the lung to become shorter and wider at 0 G. The evidence that gravity causes regional differences in ventilation by direct action on the lung is consistent with the theoretical analysis of West and Matthews (1972).
Document ID
19790070256
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Michels, D. B.
(California Univ. La Jolla, CA, United States)
Friedman, P. J.
(California Univ. La Jolla, CA, United States)
West, J. B.
(California, University La Jolla, Calif., United States)
Date Acquired
August 29, 2013
Publication Date
October 1, 1979
Publication Information
Publication: Journal of Applied Physiology: Respiratory
Volume: 47
Subject Category
Aerospace Medicine
Accession Number
79A54269
Funding Number(s)
CONTRACT_GRANT: NGL-05-009-109
Distribution Limits
Public
Copyright
Other

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