Online Encyclopedia


Online Encyclopedia
Originally appearing in Volume V08, Page 635 of the 1911 Encyclopedia Britannica.
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CAROTID BODIES These are two small bodies situated, one on each side, between the origins of the external and internal carotid arteries. Microscopically they are divided into nodules or cell balls by connective tissue, and these closely resemble the structure of the parathyroids, but are without any thymic tissue. The blood-vessels in their interior are extremely large and numerous. The modern view of their development is that they are part of the sympathetic system, and the reaction of their cells to chromium salts bears this out. (See Kohn, Archiv f. mikr. Anat. lxx., 1907.) In the Anura there is a rete or network into which the carotid artery breaks up in the position of the carotid body, and this has an important effect on the course of the circulation. It is probable, however, that this structure has nothing to do with the carotid body of Marmalia.
End of Article: CAROTID

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