Arterial Constrictor Response in a Diving Mammal

Angiograms were obtained in the harbor seal, Phoca vitulina , in air and during diving. During diving there is arterial constriction of the vascular beds of muscle, skin, kidney, liver, spleen, and presumably of all vascular beds except those perfusing the brain and heart. There is sudden constricti...

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Bibliographic Details
Published in:Science
Main Authors: Bron, Klaus M., Murdaugh, H. V., Millen, J. Eugene, Lenthall, Ronald, Raskin, Philip, Robin, Eugene D.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1966
Subjects:
harbor seal
Phoca vitulina
Online Access:http://dx.doi.org/10.1126/science.152.3721.540
https://www.science.org/doi/pdf/10.1126/science.152.3721.540
Description
Summary:Angiograms were obtained in the harbor seal, Phoca vitulina , in air and during diving. During diving there is arterial constriction of the vascular beds of muscle, skin, kidney, liver, spleen, and presumably of all vascular beds except those perfusing the brain and heart. There is sudden constriction and narrowing of muscular arteries close to their origin from the aorta. Constriction of small arterial branches is so intense that blood flow is essentially lost in all involved organs.

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