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    Respiratory function and mechanics in pinnipeds and cetaceans

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    1761.full.pdf (1.165Mb)
    Date
    2017-05-17
    Author
    Fahlman, Andreas  Concept link
    Moore, Michael J.  Concept link
    Garcia-Parraga, Daniel  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/8996
    As published
    https://doi.org/10.1242/jeb.126870
    DOI
    10.1242/jeb.126870
    Keyword
     Compliance; Marine mammal; Lung function; Respiratory flow; Tidal volume; Residual volume; Total lung capacity; Respiratory frequency; Alveolar collapse 
    Abstract
    In this Review, we focus on the functional properties of the respiratory system of pinnipeds and cetaceans, and briefly summarize the underlying anatomy; in doing so, we provide an overview of what is currently known about their respiratory physiology and mechanics. While exposure to high pressure is a common challenge among breath-hold divers, there is a large variation in respiratory anatomy, function and capacity between species – how are these traits adapted to allow the animals to withstand the physiological challenges faced during dives? The ultra-deep diving feats of some marine mammals defy our current understanding of respiratory physiology and lung mechanics. These animals cope daily with lung compression, alveolar collapse, transient hyperoxia and extreme hypoxia. By improving our understanding of respiratory physiology under these conditions, we will be better able to define the physiological constraints imposed on these animals, and how these limitations may affect the survival of marine mammals in a changing environment. Many of the respiratory traits to survive exposure to an extreme environment may inspire novel treatments for a variety of respiratory problems in humans.
    Description
    Author Posting. © Company of Biologists, 2017. This article is posted here by permission of Company of Biologists for personal use, not for redistribution. The definitive version was published in Journal of Experimental Biology 220 (2017): 1761-1773, doi:10.1242/jeb.126870.
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    • Biology
    Suggested Citation
    Journal of Experimental Biology 220 (2017): 1761-1773
     

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