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001-es BibID:	BIBFORM028806
Első szerző:	Székely György (neurobiológus)
Cím:	The termination of cutaneous nerves in the dorsal horn of the spinal cord in normal and in skin-rotated frogs / Székely G., Matesz K., Baker R. E., Antal M.
Dátum:	1982
Megjegyzések:	Following transganglionic transport of cobaltic lysine applied to the cut end of cutaneous nerves, the central terminal arbours were filled to such an extent that it was possible to visualize the dermatomal projection upon the dorsal horn in unoperated and in skin-rotated frogs. Sensory nerves of the trunk skin terminate in an oval-shaped area which probably corresponds to laminae 1-3 (or 1-4) in the mammalian spinal cord. One type of terminating collateral had a restricted terminal field either in the medial, or in the lateral, part of the oval-shaped area. Another type ended with a large terminal arbour covering almost the total extent of the oval shaped area. These terminal arbours were found for both the dorsal and the ventral cutaneous nerves. Dorsal cutaneous nerves projected preferentially to the lateral part, while ventral cutaneous nerves projected to the medial part, but both nerves sent a significant contingent of collaterals to the whole extent of the oval-shaped area. A rearrangement of the central projection patterns of the dorsal cutaneous nerves, consistently mediating misdirected responses, was not observed in skin-rotated frogs. Collaterals of trunk skin nerves terminated exclusively in the thoracic segments; they did not enter the limb-innervating (brachial and lumbosacral) segments of the spinal cord. The results corroborate the crossed pattern of sensory input in the dermatomal projection. The large, extensively overlapping, areas of termination of individual skin nerves suggest that wiping responses mediated by these nerves should be regarded as complex behaviour released from a preprogrammed centre rather than a reflex arc in which the presence specificity would be determined by wiring specificity.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Experimental Brain Research. - 45 : 1-2 (1982), p. 19-28. -
További szerzők:	Matesz Klára (1949-) (anatómus, neurobiológus) Baker, R. E. Antal Miklós (1951-) (orvos, anatómus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM028805
Első szerző:	Székely György (neurobiológus)
Cím:	Different dendritic arborization patterns of motoneurons in various places of the rat's lumbosacral spinal cord / Székely G., Matesz C., Antal M.
Dátum:	1980
Megjegyzések:	With the aid of the cobalt labelling technique the distribution and morphology of motoneurons were studied in the 2nd and 3rd lumbar segments of the rat's spinal cord. On the basis of arborization patterns of their dendritic arbors, motoneurons can be classified into six groups. 1. Large stellate-form neurons occupy the centre of the ventral horn. 2. Marginal neurons are found at the ventrolateral border of the ventral horn. 3. Horizontal neurons form a small group in the dorsolateral corner of the ventral horn. 4. Upper stellate neurons situate in the dorsal part of the ventral horn. 5. Triangular neurons constitute a compact group in the medial corner of the ventral horn. 6. Unclassifiable neurons form a scattered group in the ventral part of the ventral horn. The arborization pattern of dendrites of adjacent neurons belonging to the same group frequently resemble one another to such an extent that they are called "twin" neurons and derive probably from a common cell lineage. One member of such twin pairs is often the small counterpart of its much bigger mate. Dendrites originating from the same morphological type of motoneurons and running in the same direction, aggregate into smaller or larger bundles. The majority of dendritic bundles is oriented in, or close to, the transversal plane of the spinal cord; a significant number of longitudinal dendrites are found only in the group of triangular neurons innervating the axial musculature. The possibility is discussed that the differentiation of the different forms is determined both by genetic and epigenetic factors during morphogenesis.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Acta biologica Academiae Scientiarum Hungaricae. - 31 : 1-3 (1980), p. 305-319. -
További szerzők:	Matesz Klára (1949-) (anatómus, neurobiológus) Antal Miklós (1951-) (orvos, anatómus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: