The Capillary Endothelium in the Rete Mirabile of the Swimbladder of the Eel (Anguilla anguilla): Functional and Ultrastructural Aspects
The rete mirabile of the swimbladder of the eel is a network of straight capillaries, one against the other, in which an arterial capillary alternates with a venous capillary. The function of these capillaries is to allow the swimbladder to concentrate oxygen by a hairpin countercurrent multiplicati...
Published in: | Canadian Journal of Physiology and Pharmacology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1974
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/y74-079 http://www.nrcresearchpress.com/doi/pdf/10.1139/y74-079 |
Summary: | The rete mirabile of the swimbladder of the eel is a network of straight capillaries, one against the other, in which an arterial capillary alternates with a venous capillary. The function of these capillaries is to allow the swimbladder to concentrate oxygen by a hairpin countercurrent multiplication mechanism.Electron microscopy shows a very large number of channels in the endothelial cells and most of the channels have alternating dilatations and constrictions as though fixed in a condition of peristalsis. The findings suggest that there is a continuity between the organelles and indicate that the hairpin countercurrent multiplication mechanism may be dependent upon a continuous active return system composed of the membrane-bound channels. |
---|