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RESEARCH PAPERS

Morphometry of Cat’s Pulmonary Arterial Tree

[+] Author and Article Information
R. T. Yen, F. Y. Zhuang, Y. C. Fung, H. H. Ho

Department of AMES-Bioengineering, University of California, San Diego, La Jolla, Calif. 92093

H. Tremer, S. S. Sobin

American Heart Association, Greater Los Angeles Affiliate/University of Southern California, Cardiovascular Research Laboratory, Department of Physiology and Biophysics, Los Angeles, Calif. 90033

J Biomech Eng 106(2), 131-136 (May 01, 1984) (6 pages) doi:10.1115/1.3138469 History: Received April 30, 1983; Revised November 16, 1983; Online June 15, 2009

Abstract

Morphometic data of the pulmonary artery in the cat’s right lung are presented. Silicone elastomer casts of cat’s right lung were made, and measured, counted and analyzed. The Strahler system is used to describe the branching pattern of the arterial vascular tree. These data are needed for any quantitative approach to the study of the pulmonary circulation. For all the pulmonary blood vessels of the cat lying between the main pulmonary artery and the capillary beds, there are a total of 10 orders of vessels in the right upper lobe, 9 orders of vessels in the right middle lobe and 11 orders of vessels in the right lower lobe. The ratio of the number of branches in successive orders of vessels or the branching ratio, is 3.58. The corresponding average diameter ratio is 1.72, whereas the average length ratio is 1.81.

Copyright © 1984 by ASME
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