Document Detail

Quantitative anatomy of the lungs of the red-eared turtle, Pseudemys scripta elegans.
MedLine Citation:
PMID:  741106     Owner:  NLM     Status:  MEDLINE    
Morphometric and sterological methods were employed to evaluate the anatomical gas-exchange potential of the lungs of the fresh-water turtle, Pseudemys 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 per cent of the maximally inflated lung. The remainder is parenchyma, composed of 90 per cent air and 10 per cent 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, deltaPtO2, is similar in Pseudemys and in mammals at basal, resting and exercising states.
S F Perry
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Respiration physiology     Volume:  35     ISSN:  0034-5687     ISO Abbreviation:  Respir Physiol     Publication Date:  1978 Dec 
Date Detail:
Created Date:  1979-04-25     Completed Date:  1979-04-25     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0047142     Medline TA:  Respir Physiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  245-62     Citation Subset:  IM    
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MeSH Terms
Body Weight
Lung / anatomy & histology*
Organ Size
Oxygen Consumption
Total Lung Capacity
Turtles / anatomy & histology*

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