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KMID : 0374019860090010023
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Ewha Medical Journal
1986 Volume.9 No. 1 p.23 ~ p.29
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Fine Structure of the Neurons and Synapses in the Caudate Nucleus of the Guinea Pig
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Abstract
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The caudate nucleus of the guinea pig was examined at the ultrastructural level. At asst four types of neurons and seven types of synapses are distinguished. The large dygonal neurons are measured 18 25pm in diameter and have large amount of cytopgm with many stacks of granular endoplasmic reticulum, concentrations of ribosomes, d rich Golgi cisternae. The medium-sized, ovoid neurons are the most frequent cells iese neurons are measured 10-15 Pm in diameter and contain a lot of organelles The :dium-sized, polygonal neurons are measured 11-18 fpm in diameter. These cells have toplasm with moderate amount of granular endoplasmic reticulum and Golgi cistere. The small neurons are the least common nerve cells in the caudate nucleus They ve a nucleus with indentations, little´ Golgi apparatus and few cisternae of granular doplasmic reticulum. The axon terminals containing small round vesicles are the most quent type of synapses The majority of them make asymmetric contact on dendritic ines of neurons. Some of remainders make symmetric contact with dendrites and somi and others asymmetric contact with the same structures Few of terminals `en paszt´ with small round vesicles contact on dendrites and somata The terminals contiing elongated vesicles contact symmetrically on the dendrits and somata All of the minals containing pleomarphic or large round vesicles make synapses in. the same inner of elongated vesicle terminal.
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