Journal article

Publication year: 1978

Pages: 245-262

Journal: Respiration physiology

Volume number: 35

Issue number: 3

ISSN: 0034-5687

DOI Link: https://doi.org/10.1016/0034-5687(78)90001-4

Publisher: Elsevier

Abstract: 
Morphometric and stereological methods were employed to evaluate the anatomical gas-exchange potential of the lungs of the fresh-water turtle P. scripta elegans. The total lung volume and lung wet weight increase with the 1.4 power of body weight. Right and left lungs are similar in size and shape, containing a tissue-free central lumen, which occupies 55% of the maximally inflated lung. The remainder is parenchyma, composed of 90% air and 10% tissue, with an effective surface-to-volume ratio of 18 cm-1. The anatomical diffusion factor (ADF), or the ratio of respiratory surface area to mean diffusion distance in lung tissue, is 1 order of magnitude lower than in the mammalian lung. Taking interspecific differences in O2 consumption into account, the degree to which the lungs are exploited, .**GRAPHIC**. [mean partial pressure difference of O2 across the tissue barrier] is similar in Pseudemys and in mammals at basal, resting and exercising states.

Harvard Citation style: PERRY, S. (1978) QUANTITATIVE ANATOMY OF LUNGS OF RED-EARED TURTLE, PSEUDEMYS-SCRIPTA-ELEGANS, RESPIRATION PHYSIOLOGY, 35(3), pp. 245-262. https://doi.org/10.1016/0034-5687(78)90001-4

APA Citation style: PERRY, S. (1978). QUANTITATIVE ANATOMY OF LUNGS OF RED-EARED TURTLE, PSEUDEMYS-SCRIPTA-ELEGANS. RESPIRATION PHYSIOLOGY. 35(3), 245-262. https://doi.org/10.1016/0034-5687(78)90001-4