This paper was supported by a grant 491 g of the Consejo Nacional de Investigaciones Científicas y Téchnicas de la República Argentina; Mactur 1 B of the inisterio de Bienestar Social de la Provincia de Buenos Aires and Boehringer C. H. Sohn Laboratories.
The carotid body of the weddell seal (Leptonychotes weddelli)†
Article first published online: 27 JAN 2005
Copyright © 1970 Wiley-Liss, Inc.
The Anatomical Record
Volume 167, Issue 3, pages 309–328, July 1970
How to Cite
Morita, E., Chiocchio, S. R. and Tramezzani, J. H. (1970), The carotid body of the weddell seal (Leptonychotes weddelli). Anat. Rec., 167: 309–328. doi: 10.1002/ar.1091670306
- Issue published online: 27 JAN 2005
- Article first published online: 27 JAN 2005
- Manuscript Accepted: 12 FEB 1970
- Manuscript Received: 9 OCT 1969
Light and electron microscopy of the carotid body of the Weddell seal shows two types of cells, the main and the sustentacular cells.
The main cells contain dense osmiophilic granules in variable amount. Their cytoplasma shows either a high or a low electron density. On this basis light and dark main cells were distinguished.
The differences in cytoplasm electron density and the great variability in the number of granules were interpreted as expressions of different stages in a process of secretory nature.
A very rich innervation with outstanding nerve endings was observed in the carotid body of the Weddell seal. This picture is similar to that observed in stimulated carotid bodies. The carotid body of the Weddell seal a marine mammal that stays underwater for a long stretch of time, may be considered as subjected to frequent stimulations.