The synaptic population of lamina VI of the cervical enlargement of the cat spinal cord has been studied analysing 9 different morphological features and determining the incidence of possible combinations. The most important factors to characterize the synaptic boutons were the shape and size of pre-synaptic vesicles and the size of the synaptic boutons. The incidence of features like the density of the synaptic vesicles, the characteristics of the synaptic junction, the occurrence of post-synaptic specializations, the fibrillar or glycogen content of the pre-synaptic bag and the presence of dense-core vesicles, was unimportant. Most of the boutons (69%) contain pleomorphic vesicles (P boutons), 22% round vesicles (R boutons) and 9% flattened vesicles (F boutons). These synaptic types were further subdivided on the basis of the size of their synaptic vesicles. Most of the synapses (84%) were symmetrical, without relation to the shape of the pre-synaptic vesicles. Dense-core vesicles were found in 15% of the synaptic boutons and occurred most frequently in R boutons. On the basis of the analysis performed, we propose to classify synaptic boutons of lamina VI in 13 different types.

Torri Tarelli, L., Tredici, G., Cavaletti, G., & Marmiroli, P. (1984). The ultrastructural organization of lamina VI of the spinal cord of the cat. Morphological characterization of the synaptic population. JOURNAL FÜR HIRNFORSCHUNG, 25(2), 153-161.

The ultrastructural organization of lamina VI of the spinal cord of the cat. Morphological characterization of the synaptic population.

TREDICI, GIOVANNI;CAVALETTI, GUIDO ANGELO;MARMIROLI, PAOLA LORENA
1984

Abstract

The synaptic population of lamina VI of the cervical enlargement of the cat spinal cord has been studied analysing 9 different morphological features and determining the incidence of possible combinations. The most important factors to characterize the synaptic boutons were the shape and size of pre-synaptic vesicles and the size of the synaptic boutons. The incidence of features like the density of the synaptic vesicles, the characteristics of the synaptic junction, the occurrence of post-synaptic specializations, the fibrillar or glycogen content of the pre-synaptic bag and the presence of dense-core vesicles, was unimportant. Most of the boutons (69%) contain pleomorphic vesicles (P boutons), 22% round vesicles (R boutons) and 9% flattened vesicles (F boutons). These synaptic types were further subdivided on the basis of the size of their synaptic vesicles. Most of the synapses (84%) were symmetrical, without relation to the shape of the pre-synaptic vesicles. Dense-core vesicles were found in 15% of the synaptic boutons and occurred most frequently in R boutons. On the basis of the analysis performed, we propose to classify synaptic boutons of lamina VI in 13 different types.
Articolo in rivista - Articolo scientifico
spinal cord; lamina VI; synapses;Cytoplasmic Granules; Cats; Microscopy, Electron; Synaptic Vesicles; Glycogen
English
153
161
9
Torri Tarelli, L., Tredici, G., Cavaletti, G., & Marmiroli, P. (1984). The ultrastructural organization of lamina VI of the spinal cord of the cat. Morphological characterization of the synaptic population. JOURNAL FÜR HIRNFORSCHUNG, 25(2), 153-161.
Torri Tarelli, L; Tredici, G; Cavaletti, G; Marmiroli, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/38909
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