The Evidence of Carotid Body in the Carotid Rete of the Shiba Goat |
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| Authors: | W Rerkamnuaychoke K Ohsawa M Kurohmaru Y Hayashi T Nishida |
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| Institution: | Laboratory of Anatomy and Physiology, College of Agriculture and Veterinary Medicine, Nihon University, Japan;Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand;Department of Anatomy, Wakayama Medical College, Wakayama 640, Japan;Department of Veterianry Anatomy, Faculty of Agriculture, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan;Laboratory of Anatomy and Physiology, College of Agriculture and Veterinary Medicine, Nihon University, Kameino, Fujisawa 252, Japan |
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| Abstract: | The carotid body was found in/on the cavernous sinus of the carotid rete of the Japanese miniature Shiba goat by light and electron microscopies. The carotid body-like aggregated cell group consisted of two types of cells arranged in the lobule. The first type contained membrane-bound granular vesicles; these cells resembled to the type-I cells in the carotid body. The second type contained no cytoplasmic vesicles, and were located in the periphery, investing the type-I cells. These features appear to be consistent with those of the type-II cells in the carotid body. The nerve ending showed two peculiar features in the intercellular space of type-I cells. The clear vesicle-containing nerve ending showed a structural feature indicative of efferent synapsis. The small granular vesicle-containing nerve ending has been described as a baroreceptor-like ending by VERNA (1979). All of these features are typical characteristics of the carotid body. |
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